Preparation techniques of selective emitter for solar cell application

YAO Zhaohui; LIAO Hua; LI Jingtian; SHEN Lanxian; MA Xun; TU Jielei; LIU Zuming

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Preparation techniques of selective emitter for solar cell application

YAO Zhaohui *,LIAO Hua,LI Jingtian,SHEN Lanxian,MA Xun,TU Jielei,LIU Zuming

Solar Energy Research Institute, Yunnan Normal University, Education Ministry Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology, Yunnan Provincial Key Laboratory of Renewable Energy Engineering.

*Correspondence author

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Funding: none

Opened online:27 January 2011

Accepted by: none

Citation: YAO Zhaohui,LIAO Hua,LI Jingtian.Preparation techniques of selective emitter for solar cell application[OL]. [27 January 2011] http://en.paper.edu.cn/en_releasepaper/content/4408100

In this paper，the structure and preparation techniques selective emitter solar cells have been described detail. Selective emitter is a novel structure for solar cells, which features with a relatively heavily-doped concentration in the front contact region and appropriate concentration in other areas of the solar cells' surface in the formation of P-N junction, and can easily achieve a good Ohmic contact and reduced surface carriers recombination velocities. Three different preparation techniques and their application prospects are summarized and discussed in this paper, namely, diffusion with screen-printable phosphorous, diffusion through screen-printed barriers as well as traditional lithographic masking technology. It is pointed out that diffusion with screen-printed phosphorous paste is the simplest and most promising technology for fabrication of selective emitter solar cells in mass production line.

Keywords:Selective emitter；phosphorous paste；diffusion barrier； screen-printer

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