TY - GEN
T1 - Effect of weak diodes on the performance of CdTe thin-film modules
AU - Koishiyev, Galymzhan T.
AU - Sites, James R.
PY - 2009
Y1 - 2009
N2 - A 2-D numerical circuit model is used to study the effect of weak-diodes on the efficiency of a CdTe thin-film module. Numerical calculations of module-efficiency loss due to weak-diodes of different levels of voltage loss and fractional module area are shown. It is shown that absolute module-efficiency loss Δη (%) varies in systematic fashion with these weak-diode parameters. It was also shown that for given values of fractional area and severity of weak-diodes Δη is a strong function of the distribution pattern. A reliable parameter P to characterize the distribution of weak-diodes is introduced, and its effect on Δη, as well as individual-parameter (FF, VOC) losses, is presented. The partial isolation effect of weak-diodes due to higher transparent-conductive-oxide (TCO) sheet resistance is demonstrated.
AB - A 2-D numerical circuit model is used to study the effect of weak-diodes on the efficiency of a CdTe thin-film module. Numerical calculations of module-efficiency loss due to weak-diodes of different levels of voltage loss and fractional module area are shown. It is shown that absolute module-efficiency loss Δη (%) varies in systematic fashion with these weak-diode parameters. It was also shown that for given values of fractional area and severity of weak-diodes Δη is a strong function of the distribution pattern. A reliable parameter P to characterize the distribution of weak-diodes is introduced, and its effect on Δη, as well as individual-parameter (FF, VOC) losses, is presented. The partial isolation effect of weak-diodes due to higher transparent-conductive-oxide (TCO) sheet resistance is demonstrated.
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U2 - 10.1109/PVSC.2009.5411519
DO - 10.1109/PVSC.2009.5411519
M3 - Conference contribution
AN - SCOPUS:77951560894
SN - 9781424429509
T3 - Conference Record of the IEEE Photovoltaic Specialists Conference
SP - 1978
EP - 1981
BT - 2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009
T2 - 2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009
Y2 - 7 June 2009 through 12 June 2009
ER -