Nanocomposition of PEDOT:PSS with metal phthalocyanines as promising hole transport layers for organic photovoltaics

Rozhkova X. Aimukhanov A. Zeinidenov A. Paygin V. Valiev D. Bisquert J. Guerrero A. Alexeev A. Ilyassov B.
1 May 2023 Elsevier Ltd

Synthetic Metals
2023 #295

PEDOT:PSS is one of the most widely used materials as a hole selective layer in organic photovoltaics due to its easy processing and high reproducibility. Unfortunately, the material is limited when testing new donor:acceptor systems due to its intrinsic frontier energy levels which typically leads to energy losses due to inadequate energy level alignment and presence of resistive losses. In this work, PEDOT:PSS:metal phthalocyanines nanocomposite thin films are formulated and used as hole transport layer for organic solar cells (OSCs). PEDOT:PSS is formulated with H₂Pc, CuPc, CoPc and ZnPc metal phthalocyanines (MPc) with nanobelt morphology which confers the compatibility with the active layer. Atomic force microscopy (AFM) and x-ray diffraction (XRD) were used to study the morphology and structure of nanocomposite films, respectively. OSCs based on PEDOT:PSS:MPc nanocomposite films were fabricated and the effect of hybrid hole transport layer with various phthalocyanines on photovoltaics properties was studied. Overall, nanocomposition of PEDOT:PSS with metal phthalocyanines improves the final power conversion efficiency of solar cells by 20% by a reduction of the resistive losses due to inadequate energy level alignment. The addition of metal phthalocyanines to PEDOT:PSS is a promising method for tailor-made hole transport materials for new donor:acceptor systems to improve their efficiencies.

I-V characteristics , Impedance spectroscopy , Metal phthalocyanines nanobelts , PEDOT:PSS , Polymer solar cells

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Buketov University of Karaganda, Center of Nanotechnology and Functional Nanomaterials, University str., 28, Karaganda, 100028, Kazakhstan
National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk, 634050, Russian Federation
Institute of Advanced Materials (INAM), Universitat Jaume I, Castelló, 12006, Spain
Astana IT University, 010000, Mangilik El, EXPO C1, Nur-Sultan, Kazakhstan
Kazan Federal University, Kremlyovskaya street 18, Kazan, 420008, Russian Federation

Buketov University of Karaganda
National Research Tomsk Polytechnic University
Institute of Advanced Materials (INAM)
Astana IT University
Kazan Federal University

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