TY - GEN
T1 - One-dimensional reaction-diffusion simulation of Cu migration in polycrystalline CdTe solar cells
AU - Guo, D.
AU - Akis, R.
AU - Brinkman, D.
AU - Sankin, I.
AU - Fang, T.
AU - Vasileska, Dragica
AU - Ringhofer, Christian
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/10/15
Y1 - 2014/10/15
N2 - In this work, we report on developing 1D reaction-diffusion solver to understand the kinetics of p-type doping formation in CdTe absorbers and to shine some light on underlying causes of metastabilities observed in CdTe PV devices. Evolution of intrinsic and Cu-related defects in CdTe solar cell has been studied in time-space domain self-consistently with free carrier transport and Poisson equation. Resulting device performance was simulated as a function of Cu diffusion anneal time showing pronounced effect the evolution of associated acceptor and donor states can cause on device characteristics. Although 1D simulation has intrinsic limitations when applied to poly-crystalline films, the results suggest strong potential of the approach in better understanding of the performance and metastabilities of CdTe photovoltaic device.
AB - In this work, we report on developing 1D reaction-diffusion solver to understand the kinetics of p-type doping formation in CdTe absorbers and to shine some light on underlying causes of metastabilities observed in CdTe PV devices. Evolution of intrinsic and Cu-related defects in CdTe solar cell has been studied in time-space domain self-consistently with free carrier transport and Poisson equation. Resulting device performance was simulated as a function of Cu diffusion anneal time showing pronounced effect the evolution of associated acceptor and donor states can cause on device characteristics. Although 1D simulation has intrinsic limitations when applied to poly-crystalline films, the results suggest strong potential of the approach in better understanding of the performance and metastabilities of CdTe photovoltaic device.
KW - cadmium compounds
KW - copper
KW - numerical simulation
KW - photovoltaic cells
KW - semiconductor device reliability
UR - http://www.scopus.com/inward/record.url?scp=84912079412&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84912079412&partnerID=8YFLogxK
U2 - 10.1109/PVSC.2014.6925321
DO - 10.1109/PVSC.2014.6925321
M3 - Conference contribution
AN - SCOPUS:84912079412
T3 - 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014
SP - 2011
EP - 2015
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 -