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  • Yang, JiabaoNorthwestern Polytech Univ, Sch Mat Sci & Engn, Ctr Nano Energy Mat, State key Lab Solidificat Proc, Xian 710072, Peoples R China. (author)

Overcome Low Intrinsic Conductivity of NiOx Through Triazinyl Modification for Highly Efficient and Stable Inverted Perovskite Solar Cells

  • Article/chapterEnglish2022

Publisher, publication year, extent ...

  • 2022-07-23
  • John Wiley & Sons,2022
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-494404
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-494404URI
  • https://doi.org/10.1002/solr.202200422DOI

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  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Nickel oxide (NiOx) is a promising hole transport material in inverted organic-inorganic metal halide perovskite solar cells. However, its low intrinsic conductivity hinders its further improvement in device performance. Here, we employ a trimercapto-s-triazine trisodium salt (TTTS) as a chelating agent of Ni2+ in the NiOx layer to improve its conductivity. Due to the electron-deficient triazine ring, the TTTS complexes with Ni2+ in NiOx via a strong Ni2+-N coordination bond and increases the ratio of Ni3+:Ni2+. The increased Ni3+ concentration adjusts the band structure of NiOx, thus enhancing hole density and mobility, eventually improving the intrinsic conductivity of NiOx. As a result, the device with TTTS modification displays a champion power conversion efficiency (PCE) of 22.81%. The encapsulated device based on a modified-NiOx layer maintains 94% of its initial power output at the maximum power point and continuous one-sun illumination for 1000 h at 45 degrees C. In addition, the unencapsulated target devices also maintain 92% at 60 +/- 5% relative humidity and 25 degrees C in the air for 5000 h; and 91% at 85 degrees C in a nitrogen atmosphere for 1000 h. The research provides an effective strategy to enhance PCE and stability of inverted PSCs via modifying NiOx films with triazine molecule.

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Added entries (persons, corporate bodies, meetings, titles ...)

  • Wang, TongNorthwestern Polytech Univ, Sch Mat Sci & Engn, Ctr Nano Energy Mat, State key Lab Solidificat Proc, Xian 710072, Peoples R China. (author)
  • Li, YaohuaTaiyuan Satellite Launch Ctr, Yinchuan Branch, Yinchuan 750000, Ningxia, Peoples R China. (author)
  • Pu, XingyuNorthwestern Polytech Univ, Sch Mat Sci & Engn, Ctr Nano Energy Mat, State key Lab Solidificat Proc, Xian 710072, Peoples R China. (author)
  • Chen, HuiNorthwestern Polytech Univ, Sch Mat Sci & Engn, Ctr Nano Energy Mat, State key Lab Solidificat Proc, Xian 710072, Peoples R China. (author)
  • Li, YukeChinese Univ Hong Kong, Dept Chem, Shatin, Hong Kong 999077, Peoples R China.;Chinese Univ Hong Kong, Ctr Sci Modeling & Computat, Shatin, Hong Kong 999077, Peoples R China. (author)
  • Yang, BowenUppsala universitet,Fysikalisk kemi,Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Sch Basic Sci, Lab Photomol Sci, CH-1015 Lausanne, Switzerland(Swepub:uu)bowya118 (author)
  • Zhang, YixinNorthwestern Polytech Univ, Sch Mat Sci & Engn, Ctr Nano Energy Mat, State key Lab Solidificat Proc, Xian 710072, Peoples R China. (author)
  • Zhao, JunsongNorthwestern Polytech Univ, Sch Mat Sci & Engn, Ctr Nano Energy Mat, State key Lab Solidificat Proc, Xian 710072, Peoples R China. (author)
  • Cao, QiNorthwestern Polytech Univ, Sch Mat Sci & Engn, Ctr Nano Energy Mat, State key Lab Solidificat Proc, Xian 710072, Peoples R China. (author)
  • Chen, XingyuanNorthwestern Polytech Univ, Sch Mat Sci & Engn, Ctr Nano Energy Mat, State key Lab Solidificat Proc, Xian 710072, Peoples R China. (author)
  • Ghasemi, ShahnazSharif Univ Technol, Sharif Energy Water & Environm Inst, Tehran 113659465, Iran. (author)
  • Hagfeldt, AndersUppsala universitet,Fysikalisk kemi,Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Sch Basic Sci, Lab Photomol Sci, CH-1015 Lausanne, Switzerland(Swepub:uu)andehagf (author)
  • Li, XuanhuaNorthwestern Polytech Univ, Sch Mat Sci & Engn, Ctr Nano Energy Mat, State key Lab Solidificat Proc, Xian 710072, Peoples R China. (author)
  • Northwestern Polytech Univ, Sch Mat Sci & Engn, Ctr Nano Energy Mat, State key Lab Solidificat Proc, Xian 710072, Peoples R China.Taiyuan Satellite Launch Ctr, Yinchuan Branch, Yinchuan 750000, Ningxia, Peoples R China. (creator_code:org_t)

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