材料科学
量子点
制作
纳米技术
能量转换效率
胶体
化学工程
光电子学
医学
替代医学
病理
工程类
作者
Rabia Bashir,Muhammad Bilal,Waqar Ahmad,Amna Bashir,Sana Ullah Asif,Huan Liu,Jiyang Xie,Awais Ali,Wanbiao Hu
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2021-09-08
卷期号:4 (9): 8888-8896
被引量:8
标识
DOI:10.1021/acsanm.1c01510
摘要
As an important electron transport layer (ETL) oxide, ZnO has been explored in colloidal quantum dot solar cells (CQDSCs), showing excellent power conversion efficiency (PCE), which however is significantly undermined when being subject to a low-temperature synthesis. To this end, in terms of utilizing 2-aminoethanol as a stabilizing ligand, highly stable ZnO nanoparticles were synthesized through a low-temperature (∼120 °C) reflux method and further utilized for the fabrication of the PbS CQDSCs, which were synthesized by oleic acid and 1-octadecence-assisted PbO decomposition strategy. The champion device with a configuration of glass/ITO/ZnO/PbS-EMII/PbS-EDT/Au achieves a high fill factor (FF) of 74.8% and appreciable PCE of 10.96%, slightly higher than that of the reference device with a ZnO ETL fabricated at 200 °C. This could be related to the high recombination resistance (Rrec of ∼465.8 ohms under light conditions) for the ZnO ETL-based PbS CQDSCs. What is more, these CQDSC devices demonstrate outstanding storage stability in an ambient environment, i.e., over 99% retention in PCE after 150 day storage. As highly efficient and stable CQDSCs are achieved, this work suggests a low-temperature strategy for ETL exploration. Our results may help to pave a feasible way for the development of low-temperature flexible PbS CQD solar cells.
科研通智能强力驱动
Strongly Powered by AbleSci AI