Title Employment of dopant-free fluorene-based enamines as innovative hole transport materials to boost the transparency and performance of Sb2S3 based solar cells /
Authors Juneja, Nimish ; Daskeviciute-Geguziene, Sarune ; Spalatu, Nicolae ; Mandati, Sreekanth ; Katerski, Atanas ; Grzibovskis, Raitis ; Vembris, Aivars ; Karazhanov, Smagul ; Getautis, Vytautas ; Krunks, Malle ; Oja Acik, Ilona
DOI 10.1016/j.mssp.2023.107934
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Is Part of Materials science in semiconductor processing.. Kidlington : Elsevier. 2024, vol. 169, art. no. 107934, p. 1-10.. ISSN 1369-8001. eISSN 1873-4081
Keywords [eng] antimony sulfide ; hole transport material ; semitransparent solar cells ; photovoltaics
Abstract [eng] Antimony sulfide (Sb2S3) with bandgap of ca. 1.7 eV is a promising absorber material for indoor and semi-transparent photovoltaic devices. However, the high cost of commonly used hole transport materials (HTMs) may impede the advancement of this technology. In this study, dopant-free fluorene-based enamines with different aliphatic chain length synthesized by a simple chemical method are used for the first time as HTMs in Sb2S3 solar cell. The study investigates impact of HTM type and layer thickness on the performance of Sb2S3 solar cells. The solar cells are fabricated in superstrate configuration with Sb2S3 absorber layer deposited through ultrasonic spray pyrolysis and HTM layer applied via spin-coating. Energy level diagrams, constructed using ionization potential values of cell component layers, indicate agreeable band offsets validating the suitability of new HTMs for Sb2S3 solar cells. Both the aliphatic chain length in HTM and layer thickness influence the power conversion efficiency (PCE) of the device, layer thickness of 20–25 nm is identified as optimal. Solar cells with new HTMs demonstrate higher PCEs (3.9–4.3%) compared to the reference device employing P3HT (3.8%). Moreover, Sb2S3 cells with new HTMs without metal contact exhibit 20% increase in average visible transmittance, underscoring their potential in semi-transparent applications.
Published Kidlington : Elsevier
Type Journal article
Language English
Publication date 2024
CC license CC license description