Premium
Self‐Adhesive Macroporous Carbon Electrodes for Efficient and Stable Perovskite Solar Cells
Author(s) -
Zhang Huiyin,
Xiao Junyan,
Shi Jiangjian,
Su Hang,
Luo Yanhong,
Li Dongmei,
Wu Huijue,
Cheng YiBing,
Meng Qingbo
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201802985
Subject(s) - materials science , carbon fibers , electrode , energy conversion efficiency , chemical engineering , mesoporous material , perovskite (structure) , layer (electronics) , nanotechnology , optoelectronics , composite material , organic chemistry , catalysis , chemistry , composite number , engineering
Carbon electrode are a low‐cost and great potential strategy for stable perovskite solar cells (PSCs). However, the efficiency of carbon‐based PSCs lags far behind compared with that of state‐of‐the‐art PSCs. The poor interface contact between the carbon electrode and the underlying layer dominates the performance loss of the reported carbon‐based PSCs. In this respect, a sort of self‐adhesive macroporous carbon film is developed as counter electrode by a room‐temperature solvent‐exchange method. Via a simple press transfer technique, the carbon film can form excellent interface contact with the underlying hole transporting layer, remarkably beneficial to interface charge transfer. A power conversion efficiency of up to 19.2% is obtained for mesoporous‐structure PSCs, which is the best achieved for carbon‐based PSCs. Moreover, the device exhibits greatly improved long‐term stability. It retains over 95% of the initial efficiency after 1000 h storage under ambient atmosphere. Furthermore, after aging for 80 h under illumination and maximum power point in nitrogen atmosphere, the carbon‐based PSC retains over 94% of its initial performance.