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Warning: Cannot modify header information - headers already sent by (output started at /home3/camilope/public_html/mediawiki-1.31.1-wlv/extensions/HeadScript/HeadScript.php:3) in /home3/camilope/public_html/mediawiki-1.31.1-wlv/includes/WebResponse.php on line 46 http://camilopez.org/mediawiki-1.31.1-wlv/index.php?action=history&feed=atom&title=Cherotchenko_seminar_%28October_2019%29Cherotchenko seminar (October 2019) - Revision history2025-03-15T12:27:40ZRevision history for this page on the wikiMediaWiki 1.31.1http://camilopez.org/mediawiki-1.31.1-wlv/index.php?title=Cherotchenko_seminar_(October_2019)&diff=1227&oldid=prevLaussy at 18:11, 30 October 20192019-10-30T18:11:29Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''What?''' Electronic structures of CsPbBr$_{3-x}$Cl$_x$ perovskites: synthesis, experimental characterization, and DFT simulations.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''What?''' Electronic structures of CsPbBr$_{3-x}$Cl$_x$ perovskites: synthesis, experimental characterization, and DFT simulations.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''Who?''' Evgeniia Cherotchenko</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''Who?''' Evgeniia Cherotchenko</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* '''Where?''' Wulfruna building (city campus), <del class="diffchange diffchange-inline">MA211</del>.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* '''Where?''' Wulfruna building (city campus), <ins class="diffchange diffchange-inline">MA202</ins>.</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* '''When?''' Thu 31 October, <del class="diffchange diffchange-inline">14</del>:00.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* '''When?''' Thu 31 October, <ins class="diffchange diffchange-inline">16</ins>:00.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''Why?''' Evgeniia will introduce her research.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''Why?''' Evgeniia will introduce her research.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''How?''' The talk is one hour and open to questions, tea & cookies will be provided.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''How?''' The talk is one hour and open to questions, tea & cookies will be provided.</div></td></tr>
</table>Laussyhttp://camilopez.org/mediawiki-1.31.1-wlv/index.php?title=Cherotchenko_seminar_(October_2019)&diff=1215&oldid=prevLaussy at 16:30, 28 October 20192019-10-28T16:30:16Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><hr><p></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><hr><p></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>'''Abstract:''' Lead halide perovskites have attracted close attention from the scientific community not only due to their remarkable photovoltaic properties, but also due to their applicability to light-emitting devices because of the high photoluminescence (PL) quantum efficiency and broadly tunable emission wavelengths of these materials. Particular attention is paid to inorganic mixed-halide <del class="diffchange diffchange-inline">CsPbBr3xClx </del>compositions, which exhibit electroluminescence in the green and blue optical ranges and are actively used for the creation of various nanophotonic components. In my presentation I will discuss the electronic and optical properties of these materials and their possible applications. For every perovskite of certain composition, identified by quantitative XPS analysis, the band gap was derived from optical absorption, yielding a reliable nonlinear dependence, which could be useful for accurate prediction of the band gaps of related bulk mixed-halide perovskites. Furthermore, despite the variation in the perovskite anionic composition, their band gap remains direct at the G-point and no significant change in the shape of the band structure near this point occurs. The obtained results are confirmed by numerical calculations based on Density Functional Theory (DFT), showing the evolution of the crystal lattice constants as well as valence and conduction band structures.  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>'''Abstract:''' Lead halide perovskites have attracted close attention from the scientific community not only due to their remarkable photovoltaic properties, but also due to their applicability to light-emitting devices because of the high photoluminescence (PL) quantum efficiency and broadly tunable emission wavelengths of these materials. Particular attention is paid to inorganic mixed-halide <ins class="diffchange diffchange-inline">CsPbBr$_{3-x}$Cl$_x$ </ins>compositions, which exhibit electroluminescence in the green and blue optical ranges and are actively used for the creation of various nanophotonic components. In my presentation I will discuss the electronic and optical properties of these materials and their possible applications. For every perovskite of certain composition, identified by quantitative XPS analysis, the band gap was derived from optical absorption, yielding a reliable nonlinear dependence, which could be useful for accurate prediction of the band gaps of related bulk mixed-halide perovskites. Furthermore, despite the variation in the perovskite anionic composition, their band gap remains direct at the G-point and no significant change in the shape of the band structure near this point occurs. The obtained results are confirmed by numerical calculations based on Density Functional Theory (DFT), showing the evolution of the crystal lattice constants as well as valence and conduction band structures.  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><center></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><center></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:cherotchenko.png|500px]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:cherotchenko.png|500px]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></center></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></center></div></td></tr>
</table>Laussyhttp://camilopez.org/mediawiki-1.31.1-wlv/index.php?title=Cherotchenko_seminar_(October_2019)&diff=1214&oldid=prevLaussy at 16:28, 28 October 20192019-10-28T16:28:59Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''Where?''' Wulfruna building (city campus), MA211.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''Where?''' Wulfruna building (city campus), MA211.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''When?''' Thu 31 October, 14:00.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''When?''' Thu 31 October, 14:00.</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* '''Why?''' Evgeniia will introduce <del class="diffchange diffchange-inline">his </del>research.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* '''Why?''' Evgeniia will introduce <ins class="diffchange diffchange-inline">her </ins>research.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''How?''' The talk is one hour and open to questions, tea & cookies will be provided.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''How?''' The talk is one hour and open to questions, tea & cookies will be provided.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
</table>Laussyhttp://camilopez.org/mediawiki-1.31.1-wlv/index.php?title=Cherotchenko_seminar_(October_2019)&diff=1213&oldid=prevLaussy at 16:28, 28 October 20192019-10-28T16:28:42Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><small>(or back to the [[Physics seminars]] page)</small></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><small>(or back to the [[Physics seminars]] page)</small></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* '''What?''' Electronic structures of <del class="diffchange diffchange-inline">CsPbBr3xClx </del>perovskites: synthesis, experimental characterization, and DFT simulations.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* '''What?''' Electronic structures of <ins class="diffchange diffchange-inline">CsPbBr$_{3-x}$Cl$_x$ </ins>perovskites: synthesis, experimental characterization, and DFT simulations.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''Who?''' Evgeniia Cherotchenko</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''Who?''' Evgeniia Cherotchenko</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''Where?''' Wulfruna building (city campus), MA211.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''Where?''' Wulfruna building (city campus), MA211.</div></td></tr>
</table>Laussyhttp://camilopez.org/mediawiki-1.31.1-wlv/index.php?title=Cherotchenko_seminar_(October_2019)&diff=1211&oldid=prevLaussy at 15:17, 28 October 20192019-10-28T15:17:09Z<p></p>
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</table>Laussyhttp://camilopez.org/mediawiki-1.31.1-wlv/index.php?title=Cherotchenko_seminar_(October_2019)&diff=1210&oldid=prevAnton: Created page with "= Cherotchenko Seminar = <small>(or back to the Physics seminars page)</small> * '''What?''' Electronic structures of CsPbBr3xClx perovskites: synthesis, experimental ch..."2019-10-28T15:11:41Z<p>Created page with "= Cherotchenko Seminar = <small>(or back to the <a href="/wlv/Physics_seminars" class="mw-redirect" title="Physics seminars">Physics seminars</a> page)</small> * '''What?''' Electronic structures of CsPbBr3xClx perovskites: synthesis, experimental ch..."</p>
<p><b>New page</b></p><div>= Cherotchenko Seminar =<br />
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<small>(or back to the [[Physics seminars]] page)</small><br />
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* '''What?''' Electronic structures of CsPbBr3xClx perovskites: synthesis, experimental characterization, and DFT simulations.<br />
* '''Who?''' Evgeniia Cherotchenko<br />
* '''Where?''' Wulfruna building (city campus), MA211.<br />
* '''When?''' Thu 31 October, 14:00.<br />
* '''Why?''' Evgeniia will introduce his research.<br />
* '''How?''' The talk is one hour and open to questions, tea & cookies will be provided.<br />
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* '''Chair''': Anton Nalitov<br />
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'''Abstract:''' Lead halide perovskites have attracted close attention from the scientific community not only due to their remarkable photovoltaic properties, but also due to their applicability to light-emitting devices because of the high photoluminescence (PL) quantum efficiency and broadly tunable emission wavelengths of these materials. Particular attention is paid to inorganic mixed-halide CsPbBr3xClx compositions, which exhibit electroluminescence in the green and blue optical ranges and are actively used for the creation of various nanophotonic components. In my presentation I will discuss the electronic and optical properties of these materials and their possible applications. For every perovskite of certain composition, identified by quantitative XPS analysis, the band gap was derived from optical absorption, yielding a reliable nonlinear dependence, which could be useful for accurate prediction of the band gaps of related bulk mixed-halide perovskites. Furthermore, despite the variation in the perovskite anionic composition, their band gap remains direct at the G-point and no significant change in the shape of the band structure near this point occurs. The obtained results are confirmed by numerical calculations based on Density Functional Theory (DFT), showing the evolution of the crystal lattice constants as well as valence and conduction band structures. <br />
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<center><br />
[[File:cherotchenko.png|400px]]<br />
<\center></div>Anton