TY - JOUR
T1 - Impact of sub-cell internal luminescence yields on energy conversion efficiencies of tandem solar cells
T2 - A design principle
AU - Zhu, Lin
AU - Kim, Changsu
AU - Yoshita, Masahiro
AU - Chen, Shaoqiang
AU - Sato, Shintaroh
AU - Mochizuki, Toshimitsu
AU - Akiyama, Hidefumi
AU - Kanemitsu, Yoshihiko
PY - 2014/1/20
Y1 - 2014/1/20
N2 - To develop a realistic design principle, we calculated the maximum conversion efficiency ηsc and optimized sub-cell band-gap energies Eg in double-junction tandem solar cells via a detailed-balance theory, paying particular attention to their dependence on internal luminescence quantum yields yint of the top and bottom sub-cell materials. A strong drop in the maximum ηsc occurs when yint slightly drops from 1 to 0.9, where the drop in yint of the bottom cell causes a stronger effect than that of the top cell. For low values of yint, the maximum ηsc has a simple logarithmic dependence on the geometric mean of the two sub-cells'yint.
AB - To develop a realistic design principle, we calculated the maximum conversion efficiency ηsc and optimized sub-cell band-gap energies Eg in double-junction tandem solar cells via a detailed-balance theory, paying particular attention to their dependence on internal luminescence quantum yields yint of the top and bottom sub-cell materials. A strong drop in the maximum ηsc occurs when yint slightly drops from 1 to 0.9, where the drop in yint of the bottom cell causes a stronger effect than that of the top cell. For low values of yint, the maximum ηsc has a simple logarithmic dependence on the geometric mean of the two sub-cells'yint.
UR - https://www.scopus.com/pages/publications/84893371191
U2 - 10.1063/1.4861464
DO - 10.1063/1.4861464
M3 - 文章
AN - SCOPUS:84893371191
SN - 0003-6951
VL - 104
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 3
M1 - 031118
ER -