Integration of polyoxometalate clusters with self-assembled monolayer for efficient and robust organic solar cells
Organic solar cells (OSCs) with pin structure have achieved rapid progress in efficiency
recently. However, the pin structure suffers from inferior stability owing to the hole-
transporting layers (HTLs) that usually encounter unfavorable phase separation or
insufficient anode coverage under aging. Herein, we develop a subtle strategy that
integrates self-assembled monolayer (SAM) and polyoxometalate (POM) into an intimately
intercalating composite as HTL. This sequentially deposited composite (SDC) shows a …
recently. However, the pin structure suffers from inferior stability owing to the hole-
transporting layers (HTLs) that usually encounter unfavorable phase separation or
insufficient anode coverage under aging. Herein, we develop a subtle strategy that
integrates self-assembled monolayer (SAM) and polyoxometalate (POM) into an intimately
intercalating composite as HTL. This sequentially deposited composite (SDC) shows a …
Summary
Organic solar cells (OSCs) with p-i-n structure have achieved rapid progress in efficiency recently. However, the p-i-n structure suffers from inferior stability owing to the hole-transporting layers (HTLs) that usually encounter unfavorable phase separation or insufficient anode coverage under aging. Herein, we develop a subtle strategy that integrates self-assembled monolayer (SAM) and polyoxometalate (POM) into an intimately intercalating composite as HTL. This sequentially deposited composite (SDC) shows a unique distribution pattern, with SAM enriched at the bottom and POM functioned as both void-filler and top-surface passivator, enabling improved surface contact. Moreover, the formation of multiple doping pathways increases the charge extraction in OSCs. The SDC-HTL strategy not only results in a much higher device efficiency, but it significantly impedes the photovoltage and fill-factor degradation in p-i-n OSCs under multiple stresses. This work demonstrates the superiority of integrating multiple ultra-thin HTLs for improving the interfacial contact between functional layers, thus addressing the instability in OSCs.
cell.com
以上显示的是最相近的搜索结果。 查看全部搜索结果