TY - GEN
T1 - Alloy Loss Mitigation Through Use of Barrier Layers during CdCl Processing of Cd0.60Zn0.4Te and Cd0.87Mg0.13Te
AU - Reich, Carey L.
AU - Swanson, Drew E.
AU - Onno, Arthur
AU - Shimpi, Tushar
AU - Metzger, Wyatt K.
AU - Sampath, Walajabad S.
AU - Holman, Zachary
N1 - Funding Information:
The information, data, or work presented herein is funded in part by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, under Award Number DE- EE0007552. Additionally the authors would like to thank Kevan Cameron, Dr. Kurt Barth, Dr. James Sites, Pascal Jundt, Kelly Ramos, and Rohit Menon for their productive discussions and assistance with the work.
Publisher Copyright:
© 2018 IEEE.
PY - 2018/11/26
Y1 - 2018/11/26
N2 - The main obstacle to realizing the use of polycrystalline wide bandgap alloys of CdTe with Mg and Zn in PV is the CdCl processing step. This step, essential to CdTe device performance, removes Zn and Mg from the alloy films while producing less of the benefits seen from the process with CdTe. In this study, the use of AlO3CdS, and MgZnO films at the free surface of the alloys to prevent loss of Mg or Zn is investigated. It is found that AlO3 is the most effective at reducing loss of Mg and Zn, followed by CdS and then MgZnO. A new method of evaluating the transition to CdTe from the as deposited alloy is proposed to account for differences in transition behaviors.
AB - The main obstacle to realizing the use of polycrystalline wide bandgap alloys of CdTe with Mg and Zn in PV is the CdCl processing step. This step, essential to CdTe device performance, removes Zn and Mg from the alloy films while producing less of the benefits seen from the process with CdTe. In this study, the use of AlO3CdS, and MgZnO films at the free surface of the alloys to prevent loss of Mg or Zn is investigated. It is found that AlO3 is the most effective at reducing loss of Mg and Zn, followed by CdS and then MgZnO. A new method of evaluating the transition to CdTe from the as deposited alloy is proposed to account for differences in transition behaviors.
KW - II-VI alloys
KW - passivation
KW - tandem photovoltaics
KW - thin films
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U2 - 10.1109/PVSC.2018.8548155
DO - 10.1109/PVSC.2018.8548155
M3 - Conference contribution
AN - SCOPUS:85059898293
T3 - 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
SP - 283
EP - 288
BT - 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Y2 - 10 June 2018 through 15 June 2018
ER -