4.7 Article

Novel Strategy Toward Light Absorption Enhancement of Organic Solar Cells Using M13 Bacteriophage

Journal

SOLAR RRL
Volume -, Issue -, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/solr.202300684

Keywords

light manipulation; M13 bacteriophage; organic photovoltaics; photocurrent; power conversion efficiency

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In organic photovoltaics, efficient light-harvesting materials and appropriate device structures are crucial for increasing power conversion efficiency. This research focuses on the use of a natural biomaterial, M13 bacteriophage, as an intermediate layer to improve light transmittance and enhance the performance of organic photovoltaic cells. The functional surface hydrophilicity of M13 significantly increases light transmittance and improves the coherence between the hole transport layer and the photoactive layer, resulting in higher photocurrent density and power conversion efficiency. This approach offers a novel, low-cost, and eco-friendly design for light manipulation in solar cells.
In organic photovoltaics (OPVs), the development of efficient light-harvesting organic donor and acceptor materials and the design of a device structure with appropriate visible light transmittance play an important role in increasing their power conversion efficiency. Light manipulation strategies in OPV are widely used to improve photovoltaic performance. One of the most popular technologies is antireflective coating (ARC), which enhances light utilization in devices. However, ARC has been investigated less in OPV cells than in organic silicon solar cells. Herein, a novel approach that employs the natural biomaterial M13 bacteriophage (M13) as an intermediate layer with a thickness of a few nanometers between the hole transport layer (HTL) and indium tin oxide is investigated. The functional surface hydrophilicity, obtained by genetic manipulation of M13, improves the light transmittance by more than 84% over the visible wavelength range of the OPV cells. Furthermore, it enhances the coherence between the HTL and the photoactive layer. Therefore, the photocurrent density and power conversion efficiency significantly increase, producing a high photovoltaic performance. The proposed approach of using natural biomaterials is the basis for a novel, low-cost, and eco-friendly design for light manipulation in solar cells. This research delves into a new method employing the M13 bacteriophage as a thin layer to enhance the performance of organic photovoltaic cells. Incorporating a hydrogen-bonding protein layer not only increases light transmittance by 84% but also enhances the interface of thin film devices based on organic layers. This approach shows great potential for advancing solar cell designs.image & COPY; 2023 WILEY-VCH GmbH

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