Morphological enhancement and charge recombination mitigation in non-fullerene organic solar cells through solvent vapor annealing Anderson E X Gavim, Rahul Murali, Md Soif Ahmed, Lavadiya Sireesha, Madduri Suresh, et al. Journal of Physics D Applied Physics, 2026 This study explores the efficacy of solvent vapor annealing (SVA) in enhancing the performance of organic solar cells (OSCs) by mitigating charge recombination and improving charge extraction, which are prevalent issues limiting their efficiency. Focusing on an OSC blend with known suboptimal characteristics, we specifically examine the effects of SVA on the blend’s morphology, optical properties, and charge dynamics. Notably, SVA treatment significantly increases the short-circuit current density ( J sc ) from 17.24 ± 1.66 mA cm −2 to 26.92 ± 1.06 mA cm −2 for an optimal 30 s treatment. However, extended treatment durations inversely affect the J sc , indicating the need for precise control of the SVA protocol. The treatment also induces shifts in the optical absorption spectra and morphological changes. The impact of improved optical properties on charge photogeneration was analyzed by transfer matrix method simulations, while transient absorption, transient photovoltage (TPV) and transient photocurrent measurements helped to understand the dynamics of charge recombination. Both features explain the increase in experimental cell performance. These findings bring light to the mechanisms behind the use of SVA to enhance OSC performance and underscore its potential by careful implementation of a simple post-processing technique.
Non-ideal nernstian behavior in organic electrochemical transistors: fundamental processes and theory Bianca de Andrade Feitosa, Bruno Bassi Millan Torres, Marcos Luginieski, Douglas José Coutinho, Gregório Couto Faria Materials Horizons, 2024 We propose an OECT model for steady-state behavior based on thermodynamic and electrochemical principles. It shows that it is possible to establish the origin of the relationship between the choice of channel-electrolyte and device performance.
From PDI BSA Monomer to Nanoaggregates: an Unchanged Two-photon Absorption Cross-section and Brightness Control relation Optics Infobase Conference Papers, 2022
Donor-acceptor copolymers with internal dipole change for organic photovoltaic applications Optics Infobase Conference Papers, 2012
Donor-acceptor copolymers with internal dipole change for organic photovoltaic applications Optics Infobase Conference Papers, 2012
Donor-acceptor copolymers with internal dipole change for organic photovoltaic applications Optical Instrumentation for Energy and Environmental Applications E2 2012, 2012