학술논문
CPE-Na-Based Hole Transport Layers for Improving the Stability in Nonfullerene Organic Solar Cells: A Comprehensive Study.
Document Type
Academic Journal
Author
Samir M; Department of Electronic, Electric and Automatic Engineering, Universitat Rovira i Virgili, Tarragona 43007, Spain.; Moustafa E; Department of Electronic, Electric and Automatic Engineering, Universitat Rovira i Virgili, Tarragona 43007, Spain.; Science and Engineering of Renewable Energy Department, Faculty of Postgraduate Studies for Advanced Science, Beni Suef University, Beni Suef 62521, Egypt.; Almora O; Department of Electronic, Electric and Automatic Engineering, Universitat Rovira i Virgili, Tarragona 43007, Spain.; Ramírez-Como M; Sección de Estudios de Posgrado e Investigación, UPIITA Instituto Politécnico Nacional, Mexico City 07340, Mexico.; Montero-Rama MP; Department of Electronic, Electric and Automatic Engineering, Universitat Rovira i Virgili, Tarragona 43007, Spain.; Sánchez JG; Institute of Chemical Research of Catalonia-CERCA (ICIQ-CERCA), Tarragona 43007, Spain.; Palomares E; Institute of Chemical Research of Catalonia-CERCA (ICIQ-CERCA), Tarragona 43007, Spain.; Institución Catalana de Investigación y Estudios Avanzados (ICREA), Barcelona 08010, Spain.; Pallarès J; Department of Electronic, Electric and Automatic Engineering, Universitat Rovira i Virgili, Tarragona 43007, Spain.; Marsal LF; Department of Electronic, Electric and Automatic Engineering, Universitat Rovira i Virgili, Tarragona 43007, Spain.
Source
Publisher: American Chemical Society Country of Publication: United States NLM ID: 101504991 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1944-8252 (Electronic) Linking ISSN: 19448244 NLM ISO Abbreviation: ACS Appl Mater Interfaces Subsets: PubMed not MEDLINE; MEDLINE
Subject
Language
English
Abstract
Organic photovoltaic (OPV) cells have experienced significant development in the last decades after the introduction of nonfullerene acceptor molecules with top power conversion efficiencies reported over 19% and considerable versatility, for example, with application in transparent/semitransparent and flexible photovoltaics. Yet, the optimization of the operational stability continues to be a challenge. This study presents a comprehensive investigation of the use of a conjugated polyelectrolyte polymer (CPE-Na) as a hole layer (HTL) to improve the performance and longevity of OPV cells. Two different fabrication approaches were adopted: integrating CPE-Na with PEDOT:PSS to create a composite HTL and using CPE-Na as a stand-alone bilayer deposited beneath PEDOT:PSS on the ITO substrate. These configurations were compared against a reference device employing PEDOT:PSS alone, as the HTL increased efficiency and fill factor. The instruments with CPE-Na also demonstrated increased stability in the dark and under simulated operational conditions. Device-based PEDOT:PSS as an HTL reached T80 after 2500 h while involving CPE-Na in the device kept at T90 in the same period, evidenced by a reduced degradation rate. Furthermore, the impedance spectroscopy and photoinduced transient methods suggest optimized charge transfer and reduced charge carrier recombination. These findings collectively highlight the potential of CPE-Na as a HTL optimizer material for nonfluorine OPV cells.