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  4. Close spaced sublimation deposition of CdTe layers with process gas oxygen for thin film solar cells
 
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2017
Journal Article
Title

Close spaced sublimation deposition of CdTe layers with process gas oxygen for thin film solar cells

Abstract
Close spaced sublimation (CSS) is one of the leading technologies for deposition of the absorber layer in CdTe solar cells. For large scale production CSS is a dynamic process where the substrates are moved above the crucible at a close distance. In this study oxygen as a process gas is injected during dynamic CSS deposition. Solar cells are prepared from these layers by CdCl2 activation, copper doping and back contact deposition. The samples are investigated using current voltage measurement, quantum efficiency, scanning electron microscopy of cross sections and deep level transient spectroscopy.The results show that the precise introduction of oxygen can improve the solar cell efficiency. The reasons for this effect are discussed in this study.
Author(s)
Krishnakumar, V.
CTF Solar GmbH, Zur Wetterwarte 50, 01109 Dresden, Germany
Späth, B.
CTF Solar GmbH, Zur Wetterwarte 50, 01109 Dresden, Germany
Drost, C.
CTF Solar GmbH, Zur Wetterwarte 50, 01109 Dresden, Germany
Kraft, C.
Siepchen, B.
Delahoy, A.
Physics Department and CNBM New Energy Materials Research Center, New Jersey Institute of Technology, Newark, NJ 07102, USA
Tan, X.
Chin, K.
Peng, S.
Hirsch, D.
Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP  
Zywitzki, O.
Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP  
Modes, T.
Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP  
Morgner, H.
Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP  
Journal
Thin solid films  
DOI
10.1016/j.tsf.2016.10.009
Language
English
Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP  
Keyword(s)
  • cadmium telluride

  • thin film

  • solar cells

  • absorber layer

  • electrical characterization

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