期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 31, 页码 34882-34889出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c08006
关键词
carbon black nanoparticle; inorganic perovskite; interlayer; diffusion of carbon black; long-term stability; bulk heterojunction solar cell
资金
- Shanghai Municipal Natural Science Foundation [16ZR1441000]
- Shanghai Talent Development Foundation [2018039]
- SICCAS [TD-KJ-17-012-W001]
- Zhejiang Energy Group [TD-KJ-17-012-W001]
CsPbI2Br perovskite solar cells (PSCs) based on carbon electrodes (CEs) are considered to be low-cost and thermally stable devices. Nevertheless, the insufficient contact and energy level mismatch between the CsPbI2Br layer and CE hinder the further enhancement of the cell efficiency. Herein, a carbon black (CB) interlayer was introduced between the perovskite layer and CE. The hole extraction was facilitated due to the larger contact area and suitable energy band alignment in the CsPbI2Br/CB interface. Further investigation indicated the diffusion of CB nanoparticles from the CE or CB layer to the CsPbI2Br film after a certain period of time. We disclosed the formation of a CsPbI2Br bulk heterojunction structure due to the carbon diffusion, which resulted in an efficiency enhancement. As a result, a record efficiency of 13.13% is achieved for carbon-based inorganic PSCs. This work also reveals that the diffusion of CB nanoparticles in CB-containing PSCs is universal and inevitable, although this kind of diffusion results in the enhancement of cell efficiency.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据