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Yong-Tao An, Christophe Labbé, Julien Cardin, Magali Morales and Fabrice Gourbilleau Highly Efficient Infrared Quantum Cutting in Tb3+−Yb3+ Codoped Silicon Oxynitride for Solar Cell Applications Advanced Optical Materials 1

Article first published online: 10 SEP 2013 | DOI: 10.1002/adom.201300186

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Highly efficient IR quantum cutting is obtained in a silicon-based matrix in an excess of nitrogen with a Tb3+–Yb3+ system, paving the way for further improvement of current solar cell efficiency and for a very low production cost. The dynamic photoluminescence measurements reveal a high quantum efficiency of 183%, giving an additional external quantum efficiency estimated at almost 2%.

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