화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO))
권호 45권 1호
발표분야 분자전자 부문위원회 I
제목 SnO2 Electron Transport Bilayer for Highly Efficient Planar Perovskite Solar Cell
초록 SnO2 is a very promising material as electron transport layer (ETL) in perovskite solar cells (PSCs). However, efficiency of SnO2 based PSCs is still lower than that of high temperature processed TiO2 ETL. In this work, we report a new type of bilayer ETL using SnO2 sphere and Zn doped SnO2 nanorod to improve the performance of PSCs. Compared with the PSCs using a typical spherical SnO2 ETL (PCE = 20%, Voc = 1.14 V, Jsc = 22.4 and FF = 78.9% ), the performance of the bi-layer structured ETL based PSC (PCE = 21.1%, Voc = 1.16 V, Jsc = 23.3 and FF = 78.9% ) is dramatically improved. This improved performance can be attributed to the higher transmittance, effective blocking effect, and superior charge collection property of bilayer ETL. In addition, bilayer ETL based flexible PSCs show superior device performance beyond 21%, which is the highest efficiency among all flexible PSCs, demonstrating its potential for application into flexible device.
저자 김기웅1, 신성식2, 이경진1, 서장원2
소속 1한국화학(연), 2충남대
키워드 SnO2; Perovskite Solar Cell; Bilayer; Electron Transport Layer; Nanoparticles
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