TY - GEN
T1 - Electrical characteristics and hot carrier effects in quantum well solar cells
AU - Nguyen, Dac Trung
AU - Lombez, Laurent
AU - Gibelli, Francois
AU - Paire, Myriam
AU - Boyer-Richard, Soline
AU - Durand, Olivier
AU - Guillemoles, Jean François
N1 - Publisher Copyright:
© 2017 SPIE.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - We report on the opto-electrical characterization of quantum-well solar cells designed for generation of hot carriers. Short-circuit current is proportional to laser power in the entire range. Population density, temperature and quasi-Fermi level splitting of photo-generated confined carriers are investigated by fitting the full luminescence spectra using generalized Planck's law. The energy-dependent absorptivity is identified to obtain good fit accuracy and takes into account the absorption of excitons and free carriers in the quantum well. Furthermore, electrical injection and extraction across the barriers modify the temperature of the quantum well carrier population linearly, hinting at the role of barriers as semi-selective high-energy contact.
AB - We report on the opto-electrical characterization of quantum-well solar cells designed for generation of hot carriers. Short-circuit current is proportional to laser power in the entire range. Population density, temperature and quasi-Fermi level splitting of photo-generated confined carriers are investigated by fitting the full luminescence spectra using generalized Planck's law. The energy-dependent absorptivity is identified to obtain good fit accuracy and takes into account the absorption of excitons and free carriers in the quantum well. Furthermore, electrical injection and extraction across the barriers modify the temperature of the quantum well carrier population linearly, hinting at the role of barriers as semi-selective high-energy contact.
U2 - 10.1117/12.2251331
DO - 10.1117/12.2251331
M3 - Conference contribution
AN - SCOPUS:85019635476
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VI 2017
A2 - Freundlich, Alexandre
A2 - Sugiyama, Masakazu
A2 - Lombez, Laurent
PB - SPIE
T2 - Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VI 2017
Y2 - 30 January 2017 through 1 February 2017
ER -