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The Research of Selective Emitting Mono-crystalline Silicon Solar Cell by Phosphorus Paste

Author: HanYun
Tutor: ZhaoZuoLing
School: Beijing Jiaotong University
Course: Optical Engineering
Keywords: Solar cell Selective emitter Phosphorus pulp Conversion efficiency
CLC: TM914.4
Type: Master's thesis
Year: 2011
Downloads: 158
Quote: 0
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Abstract


In today 's society , with the highlights of the environmental pollution, energy crisis , clean solar energy utilization was put on the agenda . Crystalline silicon cells in the current solar cell production areas , continues to occupy the main market . At the same time, the high cost of production of crystalline silicon cells and limit further large-scale applications . Although the current crystalline silicon solar cell process is simple , easy to implement large-scale production . However, in the two processes of proliferation and screen printing mutual constraints : low dopant diffusion in order to reduce the recombination of charge carriers , usually required ; screen printing in order to form a good ohmic contact , the requirements of the heavily doped ; thus requiring thin surface diffusion is reached heavily doped layer resistance of 45Ω / (?) about limiting the photoelectric conversion efficiency of the solar cell . The present study was to change the conventional single-crystal silicon solar cell production process , preparing a selective emitter solar cell . Before diffusion in the electrode area printing a layer of phosphorus pulp and with phosphorus pulp as a source of phosphorus re- diffusion electrode area ; At the same time, in the non-electrode regions POC13 light as a source of phosphorus diffusion . In this method of preparing a selective emitter solar cell , and solar cell with the conventional process for comparison testing . Tested , the conversion efficiency is 0.6% higher than the conventional process cells . The main research work are summarized as follows: 1, the principle of the solar cells are introduced , mainly from the structure, model and parameter analysis , and present the monocrystalline silicon solar cell production technology and equipment . 2, the selective emitter , principle and method study . According to each way of contrast , an easy to achieve phosphorus slurry method , and the preparation process of the phosphor slurry method selective emitter battery . 3, according to the experimental procedure for the preparation of selective emitter battery and a conventional battery testing and analysis , by contrast, to verify the advantage of the selective emitter battery , to achieve the desired effect .

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CLC: > Industrial Technology > Electrotechnical > Independent power supply technology (direct power) > Photocell > Solar cells
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