| Автор | Tanaka, Kenichiro |
| Автор | Kondo, Takashi |
| Дата выпуска | 2003-11-30 |
| dc.description | We have performed optical absorption and electroabsorption studies on the lead-iodide-based natural quantum-well perovskite-type crystals with different well width (C<sub>6</sub>H<sub>13</sub>NH<sub>3</sub>)<sub>2</sub>(CH<sub>3</sub>NH<sub>3</sub>)<sub>m−1</sub>Pb<sub>m</sub>I<sub>3m+1</sub>. With decreasing well thickness, m, the resonance energies of the lowest-energy excitons shift to higher energy due to the increase of the bandgap. The binding energies and oscillator strengths of the excitons drastically increase due to the spatial confinement and image charge effect with decreasing m. The bandgap of (C<sub>6</sub>H<sub>13</sub>NH<sub>3</sub>)<sub>2</sub>(CH<sub>3</sub>NH<sub>3</sub>)<sub>m−1</sub>Pb<sub>m</sub>I<sub>3m+1</sub> (m≥2) can be reproduced by the effective-mass approximations, while the effective-mass approach is not valid for (C<sub>6</sub>H<sub>13</sub>NH<sub>3</sub>)<sub>2</sub>PbI<sub>4</sub> (m=1). |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | © 2004 Elsevier Science Ltd |
| Название | Bandgap and exciton binding energies in lead-iodide-based natural quantum-well crystals |
| Тип | paper |
| DOI | 10.1016/j.stam.2003.09.019 |
| Electronic ISSN | 1878-5514 |
| Print ISSN | 1468-6996 |
| Журнал | Science and Technology of Advanced Materials |
| Том | 4 |
| Первая страница | 599 |
| Последняя страница | 604 |
| Аффилиация | Tanaka, Kenichiro; |
| Аффилиация | Kondo, Takashi; Department of Materials Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan |
| Выпуск | 6 |
