In order to obtain high efficiency CdS/CdTe solar cells, a CdTe heat treatment in a Cl-2 containing atmosphere is necessary. Normally, this treatment is done by depositing a CdCl2 thin film on top of CdTe and by heating the system in air at a fixed temperature. This step is disadvantageous in a large scale fabrication process because it involves the use of CdCl2 that it is difficult to be handled. We replaced this treatment by using a gas (HCF2Cl) that is stable, inert and not toxic at room temperature and eliminates the step of CdCl2 evaporation and subsequent chemical etching. (c) 2007 Elsevier B.V. All rights reserved.
A study of the CdTe treatment with a Freon gas such as CHF2Cl / Mazzamuto, Samantha; Vaillant, L; Bosio, Alessio; Romeo, Nicola; Armani, N; Salviati, G.. - In: THIN SOLID FILMS. - ISSN 0040-6090. - 516:20(2008), pp. 7079-7083. [10.1016/j.tsf.2007.12.124]
A study of the CdTe treatment with a Freon gas such as CHF2Cl
MAZZAMUTO, Samantha;BOSIO, Alessio;ROMEO, Nicola;
2008-01-01
Abstract
In order to obtain high efficiency CdS/CdTe solar cells, a CdTe heat treatment in a Cl-2 containing atmosphere is necessary. Normally, this treatment is done by depositing a CdCl2 thin film on top of CdTe and by heating the system in air at a fixed temperature. This step is disadvantageous in a large scale fabrication process because it involves the use of CdCl2 that it is difficult to be handled. We replaced this treatment by using a gas (HCF2Cl) that is stable, inert and not toxic at room temperature and eliminates the step of CdCl2 evaporation and subsequent chemical etching. (c) 2007 Elsevier B.V. All rights reserved.| File | Dimensione | Formato | |
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