Work

Numerical investigation of graphene derivatives as HTL in PBDB-T:NCBDT bulk heterojunction organic solar cell

Year: 2024

Type: article

Abstract: The damaging effects of the most widely used PEDOT:PSS have led researchers to search for an alternative hole transport layer (HTL) in non-fullerene acceptor (NFA) based bulk heterojunction organic solar cells (BHJOSC’s). This work highlights the numerical simulation study of possible new approach of utilizing graphene, graphene oxide (GO), reduced graphene oxide (rGO), and p type doped graphene (p-graphene), as an alternative to PEDOT:PSS in non-fullerene acceptor based bulk heterojunction organic solar cell (NFABHJOSC) with PBDB-T as donor and NCBDT as acceptor using SCAPS1D. NCBDT is an emerging small-molecule non-fullerene acceptor (SM-NFA) whose bandgap can be tuned and reduced, making it a better option as an acceptor. Validation of the software is done by matching simulation results with experimental results. Diverse electron transport layers (ETL’s), including PDINO, ZnO, IGZO, TiO 2 , TiO 2 :gr (20%) composite, and TiO 2 :gr (10%) composite, are introduced, and device performance of various configurations is analysed. Optimization of the best device configuration ITO (4.8 eV)/rGO/PBDB-T:NCBDT/PDINO/Al gave an improved efficiency of 17.47%, fill factor (FF) of 77.45%, short circuit current density (Jsc) of 25.407 mA/cm 2 , and an open circuit voltage (Voc) of 0.8878 V. • Device modelling and simulation of bulk heterojunction organic solar cell with PBDB-T: NCBDT as active layer. • Five different HTL’s, six different ETL’s, and four metal contact work functions are used to find the most suitable configuration by simulation study. • Graphene, graphene oxide, reduced graphene oxide and p-graphene are used as HTL. • Optimization of best configuration by changing parameters of component layers. • Optimized device configuration yielded a PCE of 17.47%.

Source: Results in Optics

DOI: 10.1016/j.rio.2024.100748

Authors: Denet Davis, K.S. Sudheer

Institutions: University of Calicut, Christ University

Language: English

Topic: Organic Electronics and Photovoltaics

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $1,230