ITO-free polymer solar cells with vanadium oxide hole transport layer

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• 作者：Da-Young Lee^b ; Se-Phin Cho^b ; Seok-In Na^b ; Seok-Soon Kim^a ; ^{sskim@kunsan.ac.kr}
• 关键词：ITO-free ; Polymer solar cells ; PEDOT ; PSS electrode ; V2O5 hole transport layer
• 刊名：Journal of Industrial and Engineering Chemistry
• 出版年：2017
• 出版时间：25 January 2017
• 年：2017
• 卷：45
• 期：Complete
• 页码：1-4
• 全文大小：1450 K
• 卷排序：45

文摘

Although highly conductive poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) has emerged as alternative transparent electrodes to indium thin oxide (ITO), cell-performance is inferior to ITO based polymer solar cells (PSCs). To improve PEDOT:PSS based PSCs, we inserts metal-oxide hole transport layer (HTL) between PEDOT:PSS electrodes and photoactive layers for the first time. Device with optimized vanadium oxide HTL exhibits enhanced power conversion efficiency (PCE) of 3.33% (3.03% for conventional ITO-free PSCs). Improved performance is attributed to the increased shunt resistance and reduced surface roughness of PEDOT:PSS electrodes. Furthermore, improvement in device-stability under the atmospheric condition is observed.