光电阴极
色素敏化染料
非阻塞I/O
材料科学
能量转换效率
串联
钴
图层(电子)
化学工程
光伏系统
光电子学
电极
纳米技术
化学
复合材料
有机化学
催化作用
工程类
电子
物理化学
冶金
物理
生物
电解质
量子力学
生态学
作者
Phuong Ho,Suresh Thogiti,Le Quoc Bao,Rajesh Cheruku,Kwang‐Soon Ahn,Jae Hong Kim
标识
DOI:10.1016/j.solener.2017.12.035
摘要
Abstract The efficiency of tandem pn-dye-sensitized solar cells (pn-DSCs) has been limited by the poor performance of the available p-DSCs. A facile approach of introducing a compact NiO blocking layer into an active NiO photocathode network of p-DSCs and pn-DSCs is presented to enrich the power conversion efficiency (PCE) using a Co2+/3+ redox mediator. Two photoelectrodes sensitized with different dyes (SQ for n-DSC and P1 for p-DSC) have a complementary nature in absorbing solar irradiation at different wavelengths. The constructed pn-DSC demonstrates an enhanced photovoltage compared to n-DSC, resulting in an overall PCE of 1.486%. This PCE is further improved to 1.913% by the addition of an optimized NiO blocking layer to the p-DSC; this was prepared via spin-coating with a nickel acetate precursor solution. All photovoltaic parameters were significantly increased with the introduction of a blocking layer compared to a bare cell.
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