In-situ Growth of Conformal SnO_(2) Layers for Efficient Perovskite Solar CellsOA北大核心CSTPCD
Significant progress has recently been made in enhancing the power conversion efficiency(PCE)of perovskite solar cells(PSCs).The electron transport layer(ETL),as an essential component of PSCs,significantly influences the performance of devices.Traditional spin-coating method for preparing the ETL fails to fully cover the cusp of FTO transparent conductive glass substrate,leading to direct contact between perovskite film and FTO substrate,which induces charge recombination and reduces the performance of PSCs.To address this issue,an in-situ growth method was proposed to prepare conformal SnO_(2) films on FTO glass substrates in this study.The resulting SnO_(2) films are not only dense and uniform,fully covering the cusp of the FTO glass substrates and reducing the contact area between the FTO substrates and the perovskite films,but also facilitating the formation of perovskite films with large grain sizes.Moreover,the conformal SnO_(2) films can improve the charge extraction at the SnO_(2)/perovskite interface,reduce the trap density and trap-assisted recombination in PSCs,and thus enhance the PCE of PSCs.Through comparative experiments,it is found that the PSCs with in-situ grown SnO_(2) films show an improved PCE of 21.97%,which significantly increased compared to that with spin-coated SnO_(2) films(20.93%).All above data demonstrate that the as-prepared SnO_(2) film can serve as an ideal ETL.It is worth mentioning that this method avoids the use of corrosive hydrochloric acid and toxic thioglycolic acid,and it can also be extended to ITO flexible transparent conductive substrates in the future.
LIU Suolan;LUAN Fuyuan;WU Zihua;SHOU Chunhui;XIE Huaqing;YANG Songwang
CAS Key Laboratory of Materials for Energy Conversion,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,ChinaCAS Key Laboratory of Materials for Energy Conversion,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China School of Energy and Materials,Shanghai Polytechnic University,Shanghai 201209,ChinaSchool of Energy and Materials,Shanghai Polytechnic University,Shanghai 201209,China Shanghai Engineering Research Center of Advanced Thermal Functional Materials,Shanghai 201209,ChinaZhejiang Baima Lake Laboratory Co.Ltd.,Hangzhou 310000,ChinaSchool of Energy and Materials,Shanghai Polytechnic University,Shanghai 201209,China Shanghai Engineering Research Center of Advanced Thermal Functional Materials,Shanghai 201209,ChinaCAS Key Laboratory of Materials for Energy Conversion,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China
化学工程
perovskite solar cellconformal SnO_(2)filmin-situ growth
《无机材料学报》 2024 (12)
P.1397-1403,I0009,8
Space Application System of China Manned Space Program。
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