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To commercialize perovskite solar cells (PSCs), it is crucial to develop cost-effective, dopant-free hole transport layers (HTLs) that can be processed at low temperatures. Herein, a dopant-free small molecular material 4,40,40-Tris[2-naphthyl(phenyl)amino] triphenylamine (2TNATA) was utilized in inverted PSCs as a HTL. The position of the highest occupied molecular orbital energy of 2TNATA is properly aligned with the perovskite valence band maximum. Moreover, 2TNATA can be processed at lower temperatures and shows excellent thermal stability. The lead (Pb) perovskite on 2TNATA exhibited superior crystallinity and morphology compared to the perovskite on poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and poly [bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA). Furthermore, the carrier kinetics in 2TNATA-based PSCs was superior to PTAA and PEDOT:PSS-based PSCs. Consequently, an outstanding power conversion efficiency (PCE) of 20.58% was observed from the 2TNATAHTL-based0.09cm2PSCs,whilePTAAandPEDOT:PSSHTLs-based0.09cm2PSCsshowedPCEof19.36%and 14.35%, respectively. Moreover, the 2TNATA HTL-based 1.0cm2 PSCs demonstrated an impressive PCE of 20.04%. The results indicate that 2TNATA might be a promising HTL for the inexpensive and efficient inverted PSCs.

権利情報:

• In Copyright
  

キーワード: Perovskite Solar Cells, Organic Hole Transport Layer

刊行年月日: 2025-02-17

出版者: Wiley

掲載誌:

• Solar RRL (ISSN: 2367198X) vol. 9 issue. 7 2500017

研究助成金:

原稿種別: 査読前原稿 (Author's original)

MDR DOI: https://doi.org/10.48505/nims.5948

公開URL: https://doi.org/10.1002/solr.202500017

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更新時刻: 2025-12-02 16:30:24 +0900

MDRでの公開時刻: 2025-12-02 16:29:28 +0900