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Black Phosphorous Quantum Dots Sandwiched Organic Solar Cells
Author(s) -
Wang Yifan,
Li Jie,
Li Tengfei,
Wang Jiayu,
Liu Kuan,
Jiang Qianqian,
Tang Jianguo,
Zhan Xiaowei
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201903977
Subject(s) - materials science , ambipolar diffusion , quantum dot , organic solar cell , energy conversion efficiency , optoelectronics , fullerene , electron transport chain , band gap , electron mobility , chemical engineering , nanotechnology , electron , composite material , chemistry , organic chemistry , biochemistry , polymer , physics , quantum mechanics , engineering
Abstract Black phosphorous quantum dots (BPQDs) possess ambipolar charge transport, high mobility, and a tunable direct bandgap. Here, liquid‐exfoliated BPQDs are used as interlayers to modify both the electron transport layer and hole transport layer in organic solar cells (OSCs). The incorporation of BPQDs is beneficial to the formation of a cascade band structure and electron/hole transfer and extraction. The power conversion efficiency of the BPQDs‐incorporated OSC based on PTB7‐Th:FOIC blend is enhanced from 11.8% to 13.1%. In addition, power conversion efficiency enhancement is also achieved for other nonfullerene and fullerene‐based devices, demonstrating the universality of this interlayer methodology.