From Event: SPIE Optics + Photonics for Sustainable Energy, 2015
The hot carrier cell aims to extract the electrical energy from photo-generated carriers before they thermalize to the band
edges. Hence it can potentially achieve a high current and a high voltage and hence very high efficiencies up to 65%
under 1 sun and 86% under maximum concentration. To slow the rate of carrier thermalisation is very challenging, but
modification of the phonon energies and the use of nanostructures are both promising ways to achieve some of the
required slowing of carrier cooling. A number of materials and structures are being investigated with these properties and
test structures are being fabricated. Initial measurements indicate slowed carrier cooling in III-Vs with large phonon
band gaps and in multiple quantum wells. It is expected that soon proof of concept of hot carrier devices will pave the
way for their development to fully functioning high efficiency solar cells.
G. Conibeer, Santosh Shrestha, Shujuan Huang, Robert Patterson, Hongze Xia, Yu Feng, Pengfei Zhang, Neeti Gupta, Suntrana Smyth, Yuanxun Liao, Shu Lin, Pei Wang, Xi Dai, Simon Chung, Jianfeng Yang, and Yi Zhang, "Hot carrier solar cell absorbers: investigation of carrier cooling properties of candidate materials," Proc. SPIE 9562, Next Generation Technologies for Solar Energy Conversion VI, 956207 (Presented at SPIE Optics + Photonics for Sustainable Energy: August 11, 2015; Published: 8 September 2015); https://doi.org/10.1117/12.2187592.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the proceedings. They include the speaker's narration with video of the slides and animations. Most include full-text papers. Interactive, searchable transcripts and closed captioning are now available for 2018 presentations, with transcripts for prior recordings added daily.
Search our growing collection of more than 16,000 conference presentations, including many plenaries and keynotes.