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Proceedings Paper • Open Access

Hot carrier solar cell absorbers: materials, mechanisms and nanostructures
Author(s): Gavin Conibeer; Santosh Shrestha; Shujuan Huang; Robert Patterson; Hongze Xia; Yu Feng; Pengfei Zhang; Neeti Gupta; Murad Tayebjee; Suntrana Smyth; Yuanxun Liao; Zhilong Zhang; Simon Chung; Shu Lin; Pei Wang; Xi Dai

Paper Abstract

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.

Paper Details

Date Published: 17 October 2014
PDF: 11 pages
Proc. SPIE 9178, Next Generation Technologies for Solar Energy Conversion V, 917802 (17 October 2014); doi: 10.1117/12.2067926
Show Author Affiliations
Gavin Conibeer, The Univ. of New South Wales (Australia)
Santosh Shrestha, The Univ. of New South Wales (Australia)
Shujuan Huang, The Univ. of New South Wales (Australia)
Robert Patterson, The Univ. of New South Wales (Australia)
Hongze Xia, The Univ. of New South Wales (Australia)
Yu Feng, The Univ. of New South Wales (Australia)
Pengfei Zhang, The Univ. of New South Wales (Australia)
Neeti Gupta, The Univ. of New South Wales (Australia)
Murad Tayebjee, The Univ. of New South Wales (Australia)
Suntrana Smyth, The Univ. of New South Wales (Australia)
Yuanxun Liao, The Univ. of New South Wales (Australia)
Zhilong Zhang, The Univ. of New South Wales (Australia)
Simon Chung, The Univ. of New South Wales (Australia)
Shu Lin, The Univ. of New South Wales (Australia)
Pei Wang, The Univ. of New South Wales (Australia)
Xi Dai, The Univ. of New South Wales (Australia)


Published in SPIE Proceedings Vol. 9178:
Next Generation Technologies for Solar Energy Conversion V
Oleg V. Sulima; Gavin Conibeer, Editor(s)

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