کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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63794 | 48253 | 2015 | 5 صفحه PDF | دانلود رایگان |
The electron transport layer (ETL) plays an important role in planar heterojunction perovskite solar cell (PSCs), by affecting the light-harvesting, electron injection and transportation processes, and especially the crystallization of perovskite absorber. In this work, we utilized a commercial TKD-TiO2 nanoparticle with a small diameter of 6 nm for the first time to prepare a compact ETL by spin coating. The packing of small-size particles endowed TKD-TiO2 ETL an appropriate surface-wettability, which is beneficial to the crystallization of perovskite deposited via solution-processed method. The uniform and high-transmittance TKD-TiO2 films were successfully incorporated into PSCs as ETLs. Further careful optimization of ETL thickness gave birth to a highest power conversion efficiency of 11.0%, which was much higher than that of PSC using an ETL with the same thickness made by spray pyrolysis. This TKD-TiO2 provided a universal solar material suitable for the further large-scale production of PSCs. The excellent morphology and the convenient preparation method of TKD-TiO2 film gave it an extensive application in photovoltaic devices.
Description portion: Highly transparent TiO2 nanoparticle (∼ 6 nm) electron transport layer with improved wettability for DMF solvent were successfully used to fabricate planar-heterojunction PSCs with a PCE of 11.0%.Figure optionsDownload as PowerPoint slide
Journal: Journal of Energy Chemistry - Volume 24, Issue 6, November 2015, Pages 717–721