摘要
An electron transporting layer(ETL) plays an important role in extracting electrons from a perovskite layer and blocking electron-hole recombination at the perovskite/conductive substrate interface.We demonstrate an effective in-situ template self-etching(iTSE) strategy to grow the novel hollow domed SnO_2 nanotubes array with ZnO nanorods as sacrifice templates.The growth mechanism of such SnO_2 nanotubes has been proposed based on a series of controllable experiments.Using such SnO_2 nanotube as ETL for perovskite solar cell demonstrates a high photocurrent density of 15.9 mA/cm~2 at a based-voltage of 760 mV, leading to a stable power conversion efficiency of 12.1% over 1000 s under the simulated AM 1.5G one sun illumination.This work highlights the importance of the ETL material selection and provides insights into achieving an ideal ETL/substrate homojunction to facilitate electron transporting.
An electron transporting layer(ETL) plays an important role in extracting electrons from a perovskite layer and blocking electron-hole recombination at the perovskite/conductive substrate interface.We demonstrate an effective in-situ template self-etching(iTSE) strategy to grow the novel hollow domed SnO_2 nanotubes array with ZnO nanorods as sacrifice templates.The growth mechanism of such SnO_2 nanotubes has been proposed based on a series of controllable experiments.Using such SnO_2 nanotube as ETL for perovskite solar cell demonstrates a high photocurrent density of 15.9 mA/cm~2 at a based-voltage of 760 mV, leading to a stable power conversion efficiency of 12.1% over 1000 s under the simulated AM 1.5G one sun illumination.This work highlights the importance of the ETL material selection and provides insights into achieving an ideal ETL/substrate homojunction to facilitate electron transporting.
引文
[1]Chaomin Gao,Shuai Yuan,Bingqiang Cao,Jinghua Yu,Chemical Engineering Journal,2017,accepted.