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A novel leaves and needles like TiO2 (LNT) electron transfer layer (ETL) as an alternative to meso-porous TiO2 electron transfer layer (ETL) in perovskite solar cell
Optical Materials ( IF 3.9 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.optmat.2020.110281
Hamid Latif , Zuha Azher , Syeda Ammara Shabbir , Saba Rasheed , Erum Pervaiz , Abdul Sattar , Ayesha Imtiaz

Abstract Two perovskite solar cells one with leaves and needles like TiO2 (LNT) and other with meso-porous TiO2 as electron transfer layer (ETL) were fabricated. The perovskite solar cell structure FTO/Compact-TiO2/LNT/CH3NH3PbBr3/Spiro-OMeTAD/Ag with leaves and needles like TiO2 electron collector, exhibit high efficiency up to 9% being supported by high open-circuit voltage and fill factor up to 0.8 V and 0.89, respectively. The second perovskite solar cell structure FTO/Compact-TiO2/Meso-porous TiO2/CH3NH3PbBr3/Spiro-OMeTAD/Ag with meso-porous TiO2 electron collector, efficiency is 6.2% with open-circuit voltage and fill factor up to 0.77 V and 0.71 respectively. As compared to meso-porous TiO2 electron collector layer, leaves and needles like TiO2 has better electron band alignment with compact TiO2 as hole blocking layer and hence, results in higher efficiency.

中文翻译:

新型叶和针状 TiO2 (LNT) 电子转移层 (ETL) 作为钙钛矿太阳能电池中介孔 TiO2 电子转移层 (ETL) 的替代品

摘要 制备了两种钙钛矿太阳能电池,一种具有叶状和针状,如 TiO2 (LNT),另一种具有介孔 TiO2 作为电子传输层 (ETL)。钙钛矿太阳能电池结构 FTO/Compact-TiO2/LNT/CH3NH3PbBr3/Spiro-OMeTAD/Ag 具有叶和针状 TiO2 电子收集器,在高开路电压和高达 0.8 的填充因子的支持下,效率高达 9% V 和 0.89,分别。第二种钙钛矿太阳能电池结构 FTO/Compact-TiO2/Meso-porous TiO2/CH3NH3PbBr3/Spiro-OMeTAD/Ag 具有介孔 TiO2 电子收集器,效率为 6.2%,开路电压和填充因子高达 0.77 V 和 0.71分别。与介孔 TiO2 电子收集层相比,像 TiO2 这样的叶子和针状结构具有更好的电子带排列,以致密的 TiO2 作为空穴阻挡层,因此,
更新日期:2020-11-01
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