Solar Glasses: Integrated semi-transparent photovoltaics for mobile sensor applications
Holger Röhm a, Daniel Bahro a, Dominik Landerer a, Manuel Nöller a, Alexander Colsmann a
a Karlsruhe Institute of Technology, Light Technology Institute, Engesserstrasse 13, 76131 Karlsruhe, Germany
Materials for Sustainable Development Conference (MATSUS)
Proceedings of Materials for Sustainable Development Conference (MAT-SUS) (NFM22)
#AppTGT - Application Targets for Next Generation Photovoltaics
Barcelona, Spain, 2022 October 24th - 28th
Organizers: Nasim Zarrabi and Paul Meredith
Invited Speaker, Holger Röhm, presentation 101
DOI: https://doi.org/10.29363/nanoge.nfm.2022.101
Publication date: 11th July 2022

Organic solar cells allow for unobtrusive integration into surfaces of consumer electronics that are hardly feasible with established technologies. Alongside with excellent low-light performance, both opaque and semi-transparent solar cells can fit arbitrary shapes and match various colors.[1] To date, the main application for photovoltaics is power generation for the electric grid and accordingly the development of photovoltaics focuses on lowering production costs and maximizing power conversion efficiencies under direct sun illumination. Yet, emerging applications for autarkic IoT devices demand rethinking of what the optimization parameters for photovoltaics are.

Here we demonstrate fascinating properties of self-sufficient “Solar Glasses” – sunglasses that feature semi-transparent organic solar cells instead of shaded lenses.[2]

Quite literally hidden in plain sight, the solar cells serve both as light sensors and live power supply for integrated electronics and LC displays simply by harvesting ambient light. This talk dives into the special requirements and novel opportunities for mobile sensor applications and indoor photovoltaics that are remarkably different from classical power harvesting solar cells.

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