In this work we use numerical simulations to investigate the potential impact of the presence of a KInSe2 (KIS) layer on the CIGS surface due to KF post-deposition treatment (PDT). Although we focus on a KIS layer, due to the generality of the approach our results can be extended to other Alk-InSe2 of similar energy gap (larger than the CIGS bandgap), since no hypotheses have been made on the layer composition except for the energy gap being large enough to make it transparent to the AM1.5G spectrum. We consider different values for the KIS electron affinity, resulting in a range of conduction band offsets with CIGS and CdS, in the case of trap-free KIS or KIS with acceptor traps. We also evaluate the effect of the KIS layer on the cell current-voltage characteristics at low temperature.
On the effect of KInSe2 (KIS) layer on Cu In Ga Se 2 solar cell performance: a numerical study / Sozzi, Giovanna; DI NAPOLI, Simone; Enna, Matteo; Menozzi, Roberto. - ELETTRONICO. - (2019), pp. 0953-0956. (Intervento presentato al convegno 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) tenutosi a Chicago - USA nel 16-21 June 2019) [10.1109/PVSC40753.2019.8980649].
On the effect of KInSe2 (KIS) layer on Cu In Ga Se 2 solar cell performance: a numerical study
Giovanna Sozzi
;Simone Di Napoli;Matteo Enna;Roberto Menozzi
2019-01-01
Abstract
In this work we use numerical simulations to investigate the potential impact of the presence of a KInSe2 (KIS) layer on the CIGS surface due to KF post-deposition treatment (PDT). Although we focus on a KIS layer, due to the generality of the approach our results can be extended to other Alk-InSe2 of similar energy gap (larger than the CIGS bandgap), since no hypotheses have been made on the layer composition except for the energy gap being large enough to make it transparent to the AM1.5G spectrum. We consider different values for the KIS electron affinity, resulting in a range of conduction band offsets with CIGS and CdS, in the case of trap-free KIS or KIS with acceptor traps. We also evaluate the effect of the KIS layer on the cell current-voltage characteristics at low temperature.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
