Jung Hyunmin, Kim Geunjin, Jang Gyeong Sun, Lim Jihoo, Kim Moonyong, Moon Chan Su, Hao Xiaojing, Jeon Nam Joong, Yun Jae Sung, Park Helen Hejin, Seo Jangwon
Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea.
Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales (UNSW), Sydney 2052, Australia.
ACS Appl Mater Interfaces. 2021 Jul 7;13(26):30497-30503. doi: 10.1021/acsami.1c02824. Epub 2021 Jun 25.
This report addresses indium oxide doped with titanium and tantulum with high near-infrared transparency to potentially replace the conventional indium tin oxide transparent electrode used in semitransparent perovskite devices and top cells of tandem devices. The high near-infrared transparency of this electrode is possibly explained by the lower carrier concentration, suggesting less defect sites that may sacrifice its optical transparency. Incorporating this transparent electrode into semitransparent perovskite solar cells for both the top and bottom electrodes improved the device performance through possible reduction of interfacial defect sites and modification in energy alignment. With this indium oxide-based semitransparent perovskite top cell, we also demonstrated four-terminal perovskite-silicon tandem configurations with improved photocurrent response in the bottom silicon cell.
本报告探讨了掺杂钛和钽的氧化铟，其具有高近红外透明度，有望取代用于半透明钙钛矿器件及串联器件顶部电池的传统氧化铟锡透明电极。该电极的高近红外透明度可能归因于较低的载流子浓度，这表明牺牲其光学透明度的缺陷位点较少。将这种透明电极同时用于半透明钙钛矿太阳能电池的顶部和底部电极，通过可能减少界面缺陷位点以及调整能量排列，提高了器件性能。利用这种基于氧化铟的半透明钙钛矿顶部电池，我们还展示了四端钙钛矿-硅串联结构，底部硅电池的光电流响应得到了改善。
