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Portrait of Heiner Linke; Photo: Kennet Ruona

Heiner Linke

Professor, Deputy dean at Faculty of Engineering, LTH

Portrait of Heiner Linke; Photo: Kennet Ruona

Semiconductor nanowire array for transparent photovoltaic applications

Author

  • Yang Chen
  • Lukas Hrachowina
  • Enrique Barrigon
  • Jason P. Beech
  • David Alcer
  • Roman Lyttleton
  • Reza Jafari Jam
  • Lars Samuelson
  • Heiner Linke
  • Magnus Borgström

Summary, in English

The surface area of a building that could potentially be used for Building Integrated Photovoltaics would increase dramatically with the availability of transparent solar cells that could replace windows. The challenge is to capture energy from outside the visible region (UV or IR) while simultaneously allowing a high-quality observation of the outside world and transmitting sufficient light in the visible region to satisfactorily illuminate the interior of the building. In this paper, we show both computationally and experimentally that InP nanowire arrays can have good transparency in the visible region and high absorption in the near-infrared region. We show experimentally that we can achieve mean transparencies in the visible region of 65% and the radiative limit of more than 10% based on measured absorption and calculated emission. Our results demonstrate that nanowire arrays hold promise as a method to achieve transparent solar cells, which would fulfill the requirements to function as windows. In addition, we show that by optical design and by designing the geometry of nanowire arrays, solar cells can be achieved that absorb/transmit at wavelengths that are not decided by the bandgap of the material and that can be tailored to specific requirements such as colorful windows.

Department/s

  • Solid State Physics
  • NanoLund

Publishing year

2021-05-10

Language

English

Publication/Series

Applied Physics Letters

Volume

118

Issue

19

Document type

Journal article

Publisher

American Institute of Physics (AIP)

Topic

  • Condensed Matter Physics
  • Nano Technology

Status

Published

ISBN/ISSN/Other

  • ISSN: 0003-6951