Recent Progresses in Carbon Counter Electrode Materials for Perovskite Solar Cells and Modules
CHEMELECTROCHEM(2021)
Abstract
Though perovskite solar cells (PSCs) or modules (PSMs) are being developed at an unprecedented speed, several obstacles remain to their commercialization. One of the difficult problems is the expensive and unstable Au and Ag counter electrode. Therefore, highly effective, stable, and low-cost counter electrode materials should be explored. Among various counter electrode materials, carbon is one of the most promising substitutes for their rich sources, low cost, outstanding electrochemical performance, and diversified surface functions. This review summarizes recent achievements of carbon counter electrode materials, which included commercial carbon paste, carbon black, graphite, graphene, carbon nanotubes and their synthetic approaches, modifications, and structure-function relationships. Moreover, large-scale carbon counter electrode in PSCs or PSMs are specifically discussed. Hopefully, this recapitulative analysis will draw the attention of relevant researchers to re-understand the importance of counter electrode and clarify what should be noticed to develop qualified counter electrode materials for PSCs or PSMs.
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Key words
perovskite solar cells,perovskite solar modules,carbon,counter electrode,back electrode
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