Data for: Efficient ITO-free semitransparent perovskite solar cells with metal transparent electrodes

In parallel with soaring efficiency, interest in multi-functional and aesthetic semitransparent PeSCs has emerged for their special applications such as power generating window and combination with typical inorganic solar cells for highly efficient tandem cells. Typically, planar heterojunction architecture is considered as better candidate for semitransparent applications owing to its higher optical transparency and lower scattering comparing to mesoporous oxide based PeSCs. Among various device configurations, we investigated p-i-n structured PeSCs consisting with thin Cu or Ni transparent electrode/hole transport layer (HTL)/CH3NH3PbI3/[6,6]-phenyl-C61 butyric acid methyl ester (PCBM)/top electrode to demonstrate air-stable as well as efficient ITO-free semitransparent PeSCs. Ultra thin Cu and Ni, which are well-known non-precious metals having sufficient electrical conductivity and high workfunction, were studied as ITO-alternatives and optimization of devices was systematically carried out. Semitransparent PeSC fabricated on Ni /NiOX exhibited the average visible transmittance (AVT) of 22 % and PCE of 8.20 % (Opaque and semitransparent ITO based PeSCs showed PCE of 12.27 % and 9.19 %, respectively). Here, because thin perovskite layer of ~120 nm was used to ensure sufficient transparency, PCE is relatively low compared to the best recorded value. Considering required AVT for the application of power-generating window of ~25 % and recent reports on the semitransparent PeSCs, this result is one of the best performances reported to date.伴随效率的大幅提升，兼具多功能与美学性的半透明钙钛矿太阳能电池（Perovskite Solar Cells, PeSCs）逐渐受到关注，其在发电窗户、与典型无机太阳能电池结合制备高效叠层电池等特殊应用场景中展现出巨大潜力。通常而言，相较于介孔氧化物基钙钛矿太阳能电池，平面异质结结构因具备更高的光学透明度与更低的散射特性，被视为半透明应用的更优选型。在多种器件构型中，本研究针对由超薄铜（Cu）或镍（Ni）透明电极/空穴传输层（Hole Transport Layer, HTL）/甲胺铅碘（CH3NH3PbI3）/[6,6]-苯基-C61-丁酸甲酯（[6,6]-phenyl-C61 butyric acid methyl ester, PCBM）/顶电极组成的p-i-n型钙钛矿太阳能电池展开研究，旨在制备兼具空气稳定性与高效性的无氧化铟锡（Indium Tin Oxide, ITO）半透明钙钛矿太阳能电池。研究选用兼具优异导电性与高功函数的非贵金属超薄铜、镍作为氧化铟锡的替代材料，并对器件开展了系统性优化。基于镍/氧化镍（Ni/NiOX）制备的半透明钙钛矿太阳能电池，其平均可见光透射率（Average Visible Transmittance, AVT）为22%，光电转换效率（Power Conversion Efficiency, PCE）达8.20%；基于氧化铟锡的不透明与半透明钙钛矿太阳能电池的光电转换效率分别为12.27%与9.19%。本研究采用约120nm的超薄钙钛矿层以保障足够的透明度，因此其光电转换效率相较于当前已报道的最优纪录值相对偏低。考虑到发电窗户应用所需的约25%平均可见光透射率，结合当前半透明钙钛矿太阳能电池的相关研究进展，该成果属于目前已报道的最优性能之一。