Vapor CdCl2--Optimization and Screening Experiments for an All Dry Chloride Treatment of CdS/CdTe Solar Cells

Vapor CdCl2--Optimization and Screening Experiments for an All Dry Chloride Treatment of CdS/CdTe Solar Cells

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Abstract

A dry vapor treatment of CdCl2 is being developed as an alternative approach to the conventional solution CdCl2 treatment of CdS/CdTe devices. In this alternative process, the CdS/CdTe substrates are vapor treated in a close-spaced sublimation configuration. A 16-run Plackett-Burman screening experiment identified source temperature, substrate temperature, and treatment time as being the mostsignificant parameters in the process. Subsequently, a 20-run Central Composite Design showed that a source temperature of 380-390oC, a temperature gradient (DT) of 5oC, and a time of 10 minutes provides the most process tolerant combination, yielding a total-area efficiency of 12.6%. A strong interaction between DT and treatment time was also identified. The model indicated that for a small DT,device performance improved with decreasing time, whereas at larger values of DT, performance increased with increasing time.

Original language	American English
Number of pages	8
State	Published - 1998
Event	National Center for Photovoltaics Program Review Meeting - Denver, Colorado Duration: 8 Sep 1998 → 11 Sep 1998

Conference

Conference	National Center for Photovoltaics Program Review Meeting
City	Denver, Colorado
Period	8/09/98 → 11/09/98

NREL Publication Number

NREL/CP-520-25495

Access to Document

https://www.nrel.gov/docs/fy99osti/25495.pdf

Cite this

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title = "Vapor CdCl2--Optimization and Screening Experiments for an All Dry Chloride Treatment of CdS/CdTe Solar Cells",

abstract = "A dry vapor treatment of CdCl2 is being developed as an alternative approach to the conventional solution CdCl2 treatment of CdS/CdTe devices. In this alternative process, the CdS/CdTe substrates are vapor treated in a close-spaced sublimation configuration. A 16-run Plackett-Burman screening experiment identified source temperature, substrate temperature, and treatment time as being the mostsignificant parameters in the process. Subsequently, a 20-run Central Composite Design showed that a source temperature of 380-390oC, a temperature gradient (DT) of 5oC, and a time of 10 minutes provides the most process tolerant combination, yielding a total-area efficiency of 12.6%. A strong interaction between DT and treatment time was also identified. The model indicated that for a small DT,device performance improved with decreasing time, whereas at larger values of DT, performance increased with increasing time.",

author = "NREL",

year = "1998",

language = "American English",

note = "National Center for Photovoltaics Program Review Meeting ; Conference date: 08-09-1998 Through 11-09-1998",

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TY - CONF

T1 - Vapor CdCl2--Optimization and Screening Experiments for an All Dry Chloride Treatment of CdS/CdTe Solar Cells

AU - NREL, null

PY - 1998

Y1 - 1998

N2 - A dry vapor treatment of CdCl2 is being developed as an alternative approach to the conventional solution CdCl2 treatment of CdS/CdTe devices. In this alternative process, the CdS/CdTe substrates are vapor treated in a close-spaced sublimation configuration. A 16-run Plackett-Burman screening experiment identified source temperature, substrate temperature, and treatment time as being the mostsignificant parameters in the process. Subsequently, a 20-run Central Composite Design showed that a source temperature of 380-390oC, a temperature gradient (DT) of 5oC, and a time of 10 minutes provides the most process tolerant combination, yielding a total-area efficiency of 12.6%. A strong interaction between DT and treatment time was also identified. The model indicated that for a small DT,device performance improved with decreasing time, whereas at larger values of DT, performance increased with increasing time.

AB - A dry vapor treatment of CdCl2 is being developed as an alternative approach to the conventional solution CdCl2 treatment of CdS/CdTe devices. In this alternative process, the CdS/CdTe substrates are vapor treated in a close-spaced sublimation configuration. A 16-run Plackett-Burman screening experiment identified source temperature, substrate temperature, and treatment time as being the mostsignificant parameters in the process. Subsequently, a 20-run Central Composite Design showed that a source temperature of 380-390oC, a temperature gradient (DT) of 5oC, and a time of 10 minutes provides the most process tolerant combination, yielding a total-area efficiency of 12.6%. A strong interaction between DT and treatment time was also identified. The model indicated that for a small DT,device performance improved with decreasing time, whereas at larger values of DT, performance increased with increasing time.

M3 - Paper

T2 - National Center for Photovoltaics Program Review Meeting

Y2 - 8 September 1998 through 11 September 1998

ER -

Vapor CdCl2--Optimization and Screening Experiments for an All Dry Chloride Treatment of CdS/CdTe Solar Cells

Abstract

Conference

NREL Publication Number

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Cite this