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Engineered hole-free, spacer-free dye-sensitized light harvesters for indoor photovoltaic and self-powered applications
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  • Suraj Soman,
  • Andrew Simon George,
  • Sourava Chandra Pradhan,
  • K. N. Narayanan Unni
Suraj Soman
National Institute for Interdisciplinary Science and Technology CSIR Academy of Scientific and Innovative Research

Corresponding Author:[email protected]

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Andrew Simon George
National Institute for Interdisciplinary Science and Technology CSIR Academy of Scientific and Innovative Research
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Sourava Chandra Pradhan
National Institute for Interdisciplinary Science and Technology CSIR Academy of Scientific and Innovative Research
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K. N. Narayanan Unni
National Institute for Interdisciplinary Science and Technology CSIR Academy of Scientific and Innovative Research
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Abstract

We have custom-engineered dye-sensitized solar cells (DSCs) by eliminating spacers and holes, fabricating hole-free spacer-free (HF-SF) DSCs with 96% active area to total area ratio. These newly engineered HF-SF dye cells provide better scalability, lower cost, and improved aesthetics with enhanced device performance delivering more than 30% efficiency under indoor/ambient illumination. Two serially interconnected HF-SF DSCs fabricated using D35:XY1b co-sensitized organic dyes and [Cu (I/II)(dmp) 2] electrolyte were able to autonomously power an indoor temperature and humidity monitoring unit free of batteries at realistic indoor illumination intensities below 200 lux.