In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 40, No. 12R ( 2001-12-01), p. 6764-
Abstract:
To date the problem of developing a suitable back contact for CdS/CdTe solar cells has yet to be resolved. The Cu-doped graphite paste that is widely used as a back contact is associated with degradation problems due to possible Cu diffusion across the CdS/CdTe junction. This study was designed to find ways to improve the graphite paste for superior electrical contacts. Mixtures of graphite paste with various material constituents and dopants consisting of silver-, lead-, nickel-, antimony-, bismuth-, or phosphor-based compounds, were studied. Results show that the performances of solar cells fabricated from these graphite pastes vary with the change in the composition. In the cases of Ag 2 Te and Ni 2 P, we studied their relationship with the solar cell characteristics with regard to dopant quantity, and furthermore in the case of Ag 2 Te, with regard to the sintering temperature of the graphite electrode. A fill factor (F.F.) of over 0.65 and efficiencies over 13% were obtained with Ag 2 Te, Ag 3 PO 4 , Ag 2 MoO 4 , and NiTe, and efficiencies over 12% were obtained with AgF, AgCl, Ni 2 P, and Ni 3 P.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.40.6764
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2001
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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