PMID- 36132788 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220924 IS - 2516-0230 (Electronic) IS - 2516-0230 (Linking) VI - 2 IP - 9 DP - 2020 Sep 16 TI - UV-O(3) treated annealing-free cerium oxide as electron transport layers in flexible planar perovskite solar cells. PG - 4062-4069 LID - 10.1039/d0na00367k [doi] AB - Fabricating electron transport layers at low temperatures is challenging but highly desired in the field of flexible perovskite solar cells (f-PSCs). In this study, highly uniform cerium oxide (CeO (x) ) films prepared by the UV-O(3) treatment have been successfully applied as the electron transport layer (ETL) in methylammonium lead halide (CH(3)NH(3)PbI(3)) perovskite-based f-PSCs. Under AM 1.5 G sunlight with 100 mW cm(-2), these cells exhibited an open-circuit voltage (V (oc)) of 0.98 V, a short-circuit current density (J (sc)) of 19.42 mA cm(-2), a fill factor (FF) of 0.72 and power conversion efficiency (PCE) of 14.63%. The PCE was much higher than that of the control planar CeO (x) ETL (PCE approximately 9.08%) prepared at a low temperature (80 degrees C) without the UV-O(3) treatment, and this was ascribed to the improved CeO (x) film, enhanced light absorption and suppressed charge recombination. The cells that bend at 15 mm of radius showed excellent stability with less than 10% reduction in PCE after 500 cycles of repeated bending at ambient temperature. The charge-transmission kinetic parameters and long-term stability of the CeO (x) -based f-PSCs were analyzed as well. CI - This journal is (c) The Royal Society of Chemistry. FAU - Pang, Aiying AU - Pang A AD - State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China. AD - College of Chemistry and Materials, Fujian Normal University Fuzhou Fujian 350007 China. FAU - Li, Jinlong AU - Li J AD - State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China. AD - College of Chemistry, Fuzhou University Fuzhou Fujian 350002 China. FAU - Wei, Xiao-Feng AU - Wei XF AD - National Engineering Research Center of Chemical Fertilizer Catalyst, School of Chemical Engineering, Fuzhou University Fujian 350002 China. FAU - Ruan, Zhi-Wu AU - Ruan ZW AD - State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China. AD - College of Chemistry and Materials, Fujian Normal University Fuzhou Fujian 350007 China. FAU - Yang, Ming AU - Yang M AD - State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China. AD - College of Chemistry and Materials, Fujian Normal University Fuzhou Fujian 350007 China. FAU - Chen, Zhong-Ning AU - Chen ZN AUID- ORCID: 0000-0003-3589-3745 AD - State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China. AD - College of Chemistry and Materials, Fujian Normal University Fuzhou Fujian 350007 China. LA - eng PT - Journal Article DEP - 20200723 PL - England TA - Nanoscale Adv JT - Nanoscale advances JID - 101738708 PMC - PMC9419069 COIS- The authors declare no competing financial and nonfinancial interests. EDAT- 2020/07/23 00:00 MHDA- 2020/07/23 00:01 PMCR- 2020/07/23 CRDT- 2022/09/22 03:40 PHST- 2020/05/06 00:00 [received] PHST- 2020/07/14 00:00 [accepted] PHST- 2022/09/22 03:40 [entrez] PHST- 2020/07/23 00:00 [pubmed] PHST- 2020/07/23 00:01 [medline] PHST- 2020/07/23 00:00 [pmc-release] AID - d0na00367k [pii] AID - 10.1039/d0na00367k [doi] PST - epublish SO - Nanoscale Adv. 2020 Jul 23;2(9):4062-4069. doi: 10.1039/d0na00367k. eCollection 2020 Sep 16.