钙钛矿(结构)
材料科学
光电流
量子点
异质结
光电子学
兴奋剂
混合太阳能电池
光伏系统
光伏
聚合物太阳能电池
纳米技术
太阳能电池
化学工程
工程类
生物
生态学
作者
Yuhao Li,Shu Zhou,Zhiyu Xiong,Minchao Qin,Kuan Liu,Guilong Cai,Han Wang,Shenghe Zhao,Gang Li,Yao-Jane Hsu,Jianbin Xu,Xinhui Lu
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2020-10-26
卷期号:3 (11): 11359-11367
被引量:13
标识
DOI:10.1021/acsaem.0c02292
摘要
Organic photovoltaics and halide perovskite solar cells are both solution-processable third-generation photovoltaic devices (PVs) attracting enormous research attention. In this study, we demonstrate a hybrid organic and perovskite PV device by mixing all-inorganic CsPbI3 quantum dots (QDs) into the conventional organic bulk heterojunction active layer of PBDB-T:IT-M. It is found that the charge transfer properties between QDs and organic donor/acceptor interfaces can be fine-tuned with the size modulation and the heterovalent bismuth (Bi) doping of perovskite QDs, leading to an increase in open-circuit voltage. In addition, the incorporation of perovskite QDs with different sizes could effectively modify the nanoscale bulk heterojunction morphology toward more efficient charge collection and thus a higher fill factor. The photocurrent of the devices can also be improved through Rayleigh scattering and light absorption of the QDs. As a result, a noticeable enhancement in device performance has been achieved by the PBDB-T:IT-M with 10 nm Bi-doped CsPbI3 QD device. This work provides one feasible route to fine-tune the energy level alignment and nanophase separation by integrating these two promising PV materials.
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