TY - GEN
T1 - Analysis of spectral photocurrent response from multi-junction solar cells under variable voltage bias
AU - Lim, Swee H.
AU - O'Brien, Kevin
AU - Steenbergen, Elizabeth H.
AU - Li, Jing Jing
AU - Ding, Ding
AU - Zhang, Yong-Hang
PY - 2010
Y1 - 2010
N2 - Electrical and optical characterization of monolithically integrated multi-junction (MJ) solar cells is complicated by the fact that the internal subcells are not directly accessible. Two important characteristics of the MJ solar cell are the internal subcell I-V curves and the spectral photocurrent response. Techniques to obtain the subcell I-V curves as well as the spectral photocurrent response have been well demonstrated, however, the close connection between these two different measurements has not been exploited. Using small signal analysis, we establish the relationship between the subcell I-V response and the voltage dependence of the spectral photocurrent response. By an inverse analysis, we also show how to derive the subcell I-V curves from the voltage dependent spectral photocurrent response, providing a new and independent technique to extract the internal subcell I-V curves.
AB - Electrical and optical characterization of monolithically integrated multi-junction (MJ) solar cells is complicated by the fact that the internal subcells are not directly accessible. Two important characteristics of the MJ solar cell are the internal subcell I-V curves and the spectral photocurrent response. Techniques to obtain the subcell I-V curves as well as the spectral photocurrent response have been well demonstrated, however, the close connection between these two different measurements has not been exploited. Using small signal analysis, we establish the relationship between the subcell I-V response and the voltage dependence of the spectral photocurrent response. By an inverse analysis, we also show how to derive the subcell I-V curves from the voltage dependent spectral photocurrent response, providing a new and independent technique to extract the internal subcell I-V curves.
UR - http://www.scopus.com/inward/record.url?scp=78650093693&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78650093693&partnerID=8YFLogxK
U2 - 10.1109/PVSC.2010.5617046
DO - 10.1109/PVSC.2010.5617046
M3 - Conference contribution
AN - SCOPUS:78650093693
SN - 9781424458912
T3 - Conference Record of the IEEE Photovoltaic Specialists Conference
SP - 712
EP - 716
BT - Program - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010
T2 - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010
Y2 - 20 June 2010 through 25 June 2010
ER -