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|
| Type |
Poster Presentation |
| Area |
Polymer Chemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
POLY.P-12 |
| Subject |
TiO2 layer's surface dipole and energy band controlling by CuI ionic salt for high efficiency perovskite solar cells |
| Authors |
Taewan Kim, Guan-Woo Kim, Junwoo Lee, Taiho Park*
Department of Chemical Engineering, Pohang University of Science and Technology, Korea
|
| Abstract |
Perovskite solar cell is one of most hot issue solar cell materials due to its high absorption and fast carrier mobility. However, the transparent conduction oxide, such as TiO2, ZnO, SnO2, and so on, has low mobility and slow extraction because of its original properties and trap density. Especially, the TiO2, which shows the most high efficiency perovskite solar cell in meso structure, has critical cons with low mobility, slow extraction speed and high trap density in planar structure. We introduced the new modification to TiO2 using CuI ionic salt. CuI partially covered TiO2 has preferred energy band and high extraction speed because of the dipole of CuI islands. Moreover, the trap sites of TiO2 also decreased well. Finally, we got 19% planar type perovskite solar cell with negligible hysteresis. |
| E-mail |
xodhks121314@postech.ac.kr |
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121st General Meeting of the KCS