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<p>Organic solar cells (OSCs), fabricated by solution process, have attracted renewed attention from the scientific society because of their low-cost and environmentally friendly characteristics along with their flexibility and simplicity in processing. In the present work, an attempt is made to enhance the photovoltaic performance of polymer solar cells based on poly(3-hexylthiophene) (P3HT) by incorporating silver nanoparticles (AgNPs). The nanocomposite is made by the solution mixing of P3HT and AgNPs in chloroform, followed by the formation of a&#xa0;spin coating on a&#xa0;conductive glass substrate. The resulting poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) composite is subsequently deposited on the active layer to aid in the charge collection and improve the contact between layers. The effects of the AgNPs doping are studied using several characterization methods. The photoluminescence (PL) measurements show that the light emission is highly decreased, demonstrating that excitons are more easily dissociated, and their recombination becomes less effective. According to the atomic force microscopy (AFM) data, the surface becomes slightly rougher at the optimal concentration, although nanoparticles are well-distributed. The AgNPs are revealed by scanning electron microscopy (SEM); they are well dispersed in some areas at low concentrations but are aggregated in other regions at high concentrations. The current and voltage measurements demonstrate a&#xa0;noticeable enhancement in the short-circuit current density and the power conversion efficiency of the device with the AgNPs relative to the standard cells. This suggests that integrating the silver NPs with the P3HT material, in combination with an appropriate layer structure, could enhance the performance of organic solar cells and promote their application in a&#xa0;flexible renewable energy technology.</p>

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Enhanced charge transport in P3HT:Ag nanoparticles based organic devices with a PEDOT:PSS interface layer

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • Zainab Jabar Abd Al-Kareem,
  • Estabraq Talib Abdullah

摘要

Organic solar cells (OSCs), fabricated by solution process, have attracted renewed attention from the scientific society because of their low-cost and environmentally friendly characteristics along with their flexibility and simplicity in processing. In the present work, an attempt is made to enhance the photovoltaic performance of polymer solar cells based on poly(3-hexylthiophene) (P3HT) by incorporating silver nanoparticles (AgNPs). The nanocomposite is made by the solution mixing of P3HT and AgNPs in chloroform, followed by the formation of a spin coating on a conductive glass substrate. The resulting poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) composite is subsequently deposited on the active layer to aid in the charge collection and improve the contact between layers. The effects of the AgNPs doping are studied using several characterization methods. The photoluminescence (PL) measurements show that the light emission is highly decreased, demonstrating that excitons are more easily dissociated, and their recombination becomes less effective. According to the atomic force microscopy (AFM) data, the surface becomes slightly rougher at the optimal concentration, although nanoparticles are well-distributed. The AgNPs are revealed by scanning electron microscopy (SEM); they are well dispersed in some areas at low concentrations but are aggregated in other regions at high concentrations. The current and voltage measurements demonstrate a noticeable enhancement in the short-circuit current density and the power conversion efficiency of the device with the AgNPs relative to the standard cells. This suggests that integrating the silver NPs with the P3HT material, in combination with an appropriate layer structure, could enhance the performance of organic solar cells and promote their application in a flexible renewable energy technology.