TY - GEN
T1 - Balance sheets of energy and carriers and subcell characteristics in a GaInP/GaAs/Ge tandem solar cell
AU - Chen, Shaoqiang
AU - Zhu, Lin
AU - Yoshita, Masahiro
AU - Mochizuki, Toshimitsu
AU - Kim, Changsu
AU - Akiyama, Hidefumi
AU - Imaizumi, Mitsuru
AU - Kanemitsu, Yoshihiko
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/10/15
Y1 - 2014/10/15
N2 - We developed a straightforward and potentially standard method of accessing the balance sheets of energy and carriers as well as respective subcell photovoltaic properties in multi-junction tandem solar cells by measuring absolute electroluminescence quantum yields. This method was indeed applied to a GaInP/GaAs/Ge 3-junction solar cell for satellite use. The 28.7% efficiency derived as a sum of 15.2% (top), 10.7% (mid) and 2.8% (bottom) of 3 subcells via this method shows good agreement with the measured 27.4% efficiency via an I-V curve under 1-sun illumination at AM0. Moreover, the derived balance sheets of energy and carriers revealed respective subcell contributions of radiative and nonradiative recombination losses, junction loss, thermalization loss, and luminescent coupling, to provide detailed diagnosis and valuable feedback to fabrications.
AB - We developed a straightforward and potentially standard method of accessing the balance sheets of energy and carriers as well as respective subcell photovoltaic properties in multi-junction tandem solar cells by measuring absolute electroluminescence quantum yields. This method was indeed applied to a GaInP/GaAs/Ge 3-junction solar cell for satellite use. The 28.7% efficiency derived as a sum of 15.2% (top), 10.7% (mid) and 2.8% (bottom) of 3 subcells via this method shows good agreement with the measured 27.4% efficiency via an I-V curve under 1-sun illumination at AM0. Moreover, the derived balance sheets of energy and carriers revealed respective subcell contributions of radiative and nonradiative recombination losses, junction loss, thermalization loss, and luminescent coupling, to provide detailed diagnosis and valuable feedback to fabrications.
KW - Aerospace electronics
KW - Design optimization
KW - Electroluminescence
KW - Germanium
KW - III-V semiconductor materials
KW - Solar power generation
KW - photovoltaic cells
UR - https://www.scopus.com/pages/publications/84912087359
U2 - 10.1109/PVSC.2014.6925268
DO - 10.1109/PVSC.2014.6925268
M3 - 会议稿件
AN - SCOPUS:84912087359
T3 - 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014
SP - 1780
EP - 1783
BT - 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 40th IEEE Photovoltaic Specialist Conference, PVSC 2014
Y2 - 8 June 2014 through 13 June 2014
ER -
