TY - GEN
T1 - Multi-stage co-evaporation process for active Ga gradient control in CIGS solar cells
AU - Klinkert, Torben
AU - Jubault, Marie
AU - Donsanti, Frederique
AU - Lincot, Daniel
AU - Guillemoles, Jean Francois
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/10/15
Y1 - 2014/10/15
N2 - The control of the in-depth compositional gradient in Cu(In,Ga)Se2 (CIGS) absorber layers is known to be crucial to achieve very high solar to electric energy conversion efficiencies in CIGS-based solar cells. In this work we varied the Ga-gradient extrinsically, i.e. by changing the ratio of In and Ga deposition rates throughout the deposition of CIGS. We show that the double Ga gradient intrinsically achieved by the 3-stage co-evaporation process can be further optimized. The challenge thereby is to lower the optical band gap while maintaining a high open circuit voltage and fill-factor.
AB - The control of the in-depth compositional gradient in Cu(In,Ga)Se2 (CIGS) absorber layers is known to be crucial to achieve very high solar to electric energy conversion efficiencies in CIGS-based solar cells. In this work we varied the Ga-gradient extrinsically, i.e. by changing the ratio of In and Ga deposition rates throughout the deposition of CIGS. We show that the double Ga gradient intrinsically achieved by the 3-stage co-evaporation process can be further optimized. The challenge thereby is to lower the optical band gap while maintaining a high open circuit voltage and fill-factor.
KW - CIGS
KW - GDOES
KW - gradient
KW - optimization
UR - https://www.scopus.com/pages/publications/84912098907
U2 - 10.1109/PVSC.2014.6924941
DO - 10.1109/PVSC.2014.6924941
M3 - Conference contribution
AN - SCOPUS:84912098907
T3 - 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014
SP - 395
EP - 397
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 -