首页|Fast and Balanced Charge Transport Enabled by Solution-Processed Metal Oxide Layers for Efficient and Stable Inverted Perovskite Solar Cells

Fast and Balanced Charge Transport Enabled by Solution-Processed Metal Oxide Layers for Efficient and Stable Inverted Perovskite Solar Cells

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Metal oxide charge transport materials are preferable for realizing long-term stable and potentially low-cost perovskite solar cells(PSCs).However,due to some technical difficulties(e.g.,intricate fabrication protocols,high-temperature heating process,incompatible solvents,etc.),it is still challenging to achieve efficient and reliable all-metal-oxide-based devices.Here,we developed efficient inverted PSCs(IPSCs)based on solution-processed nickel oxide(NiOx)and tin oxide(SnO2)nanoparticles,working as hole and electron transport materials respectively,enabling a fast and balanced charge transfer for photogenerated charge carriers.Through further understanding and optimizing the perovskite/metal oxide interfaces,we have realized an outstanding power conversion efficiency(PCE)of 23.5％(the bandgap of the perovskite is 1.62 eV),which is the highest efficiency among IPSCs based on all-metal-oxide charge transport materials.Thanks to these stable metal oxides and improved interface properties,ambient stability(retaining 95％of initial PCE after 1 month),thermal stability(retaining 80％of initial PCE after 2 weeks)and light stability(retaining 90％of initial PCE after 1000 hours aging)of resultant devices are enhanced significantly.In addition,owing to the low-temperature fabrication procedures of the entire device,we have obtained a PCE of over 21％for flexible IPSCs with enhanced operational stability.

fast and balanced charge transferinverted perovskite solar cellslong-term stabilitylow-temperature processingmetal oxides

Jing Zhang、James Mcgettrick、Kangyu Ji、Jinxin Bi、Thomas Webb、Xueping Liu、Dongtao Liu、Aobo Ren、Yuren Xiang、Bowei Li、Vlad Stolojan、Trystan Watson、Samuel D.Stranks、Wei Zhang

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Advanced Technology Institute(ATI),University of Surrey,Guildford,Surrey GU2 7XH,UK

SPECIFIC,College of Engineering,Swansea University,Bay Campus SA1 8EN,Swansea UK

Cavendish Laboratory,University of Cambridge,J J Thomson Avenue,Cambridge CB3 0HE,UK

Department of Chemical Engineering & Biotechnology,University of Cambridge,Philippa Fawcett Drive,Cambridge CB3 0AS,UK

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UK Engineering and Physical Sciences Research Council(EPSRC)New Investigator AwardUK Engineering and Physical Sciences Research Council(EPSRC)New Investigator AwardNewton Advanced FellowshipRoyal Society,the Engineering and Physical Sciences Research CouncilRoyal Society,the Engineering and Physical Sciences Research CouncilRoyal Society,the Engineering and Physical Sciences Research CouncilEuropean Research Council(ERC)under the European Union's Horizon 2020 research and innovation program(HYPERIONRoyal Society and Tata GroupEPSRC SPECIFIC IKC

2018EP/R043272/1192097EPSRCEP/R023980/1EP/V027131/1756962UF150033EP/N020863/1

2024

10.1002/eem2.12595

能源与环境材料(英文)

能源与环境材料(英文)

ISSN：
年,卷(期)：2024.7(2)