Improvements on the uniformity of a-Si solar thin films by using auxiliary magnetic field

L. C. Hu, Y. P. Chen, J. Y. Chang, J. J. Lee, I. C. Chen, Tomi T. Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The uniformity of large area thin films deposition is a crucial process as we widely apply electron cyclotron resonance chemical vapor deposition (ECR-CVD) in solar industry. In this work, we installed sub-magnetic (auxiliary) fields for inner and outer coils under ECR-CVD process chamber to improve the deposition uniformity of a-Si solar thin films. Next, we measured the distribution of magnetic field along the central axis of chamber and the diameter of substrate surface. By this approach, we investigated the effect of sub-magnetic field to the uniformity of electron cyclotron resonance a-Si solar thin films deposition. We succeeded in obtaining an excellent deposition uniformity of a-Si solar thin films over 150mm diameter on glass substrates by adjusting the magnetic field distribution from inner and outer magnetic coils. The uniformity is within 10%. Moreover, We obtained optimal conditions for solar cell fabrication between the rapid process deposition rates (>10 Å/sec) and magnetic parameters.

Original languageEnglish
Title of host publicationChina Semiconductor Technology International Conference 2011, CSTIC 2011
Pages1097-1101
Number of pages5
Edition1
DOIs
StatePublished - 2011
Event10th China Semiconductor Technology International Conference 2011, CSTIC 2011 - Shanghai, China
Duration: 13 Mar 201114 Mar 2011

Publication series

NameECS Transactions
Number1
Volume34
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

Conference10th China Semiconductor Technology International Conference 2011, CSTIC 2011
Country/TerritoryChina
CityShanghai
Period13/03/1114/03/11

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