材料科学
光电子学
异质结
聚合物太阳能电池
电极
能量转换效率
有机太阳能电池
化学工程
太阳能电池
图层(电子)
活动层
硅
量子效率
制作
作者
Zhouhui Xia,Peng Gao,Teng Sun,Haihua Wu,Yeshu Tan,Tao Song,Shuit-Tong Lee,Baoquan Sun
标识
DOI:10.1021/acsami.8b02403
摘要
Silicon (Si)/organic heterojunction solar cells based on poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and n-type Si have attracted wide interests because they promise cost-effectiveness and high-efficiency. However, the limited conductivity of PEDOT:PSS leads to an inefficient hole transport efficiency for the heterojunction device. Therefore, a high dense top-contact metal grid electrode is required to assure the efficient charge collection efficiency. Unfortunately, the large metal grid coverage ratio electrode would lead to undesirable optical loss. Here, we develop a strategy to balance PEDOT:PSS conductivity and grid optical transmittance via a buried molybdenum oxide/silver grid electrode. In addition, the grid electrode coverage ratio is optimized to reduce its light shading effect. The buried electrode dramatically reduces the device series resistance, which leads to a higher fill factor (FF). With the optimized buried electrode, a record FF of 80% is achieved for flat Si/PE...
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