Method for absolutely measuring external quatum efficiency of solar batteries via direct current method

A technology for solar cells and external quantum efficiency, which is applied in the field of absolute measurement of external quantum efficiency of solar cells and external quantum efficiency of solar cells by DC method, can solve the problems that the accuracy cannot meet the requirements and the cost of measuring equipment is high, and achieves simplified instrument configuration and low cost. , the effect of accurate measurement results

Inactive Publication Date: 2010-04-14
NANJING UNIV
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Problems solved by technology

[0006] The problem to be solved by the present invention is: the existing quantum efficiency measurement method of solar cells is mainly the AC measurement method, the cost of the measurement equipment is high, and the accuracy cannot meet the demand. It is necessary to provide a simple, low-cost, high-precision, high-efficiency A method for measuring the quantum efficiency of solar cells

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  • Method for absolutely measuring external quatum efficiency of solar batteries via direct current method
  • Method for absolutely measuring external quatum efficiency of solar batteries via direct current method
  • Method for absolutely measuring external quatum efficiency of solar batteries via direct current method

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Embodiment Construction

[0032] Such as figure 1 , the inventive method comprises the following steps:

[0033] 1), prepare the measurement device, including xenon lamp light source 1, focusing lens 2, monochromator 5, monochromatic optical power meter, digital source meter 9, microcomputer 10 and sample holder 8, focusing lens 2 adopts quartz plano-convex lens, solar cell The positive and negative poles of the sample 7 are short-circuited to the digital source meter 9, and the sample rack 8 is arranged in the sample chamber 6. The sample chamber is a dark room made of light-absorbing material to shield stray light. The solar cell sample 7 is fixed on the sample rack 8, and the sample rack 8 Built-in electronic temperature control device;

[0034] 2), use the characteristic line of the mercury lamp spectrum to calibrate the monochromator 5, firstly calibrate level 0, and then calibrate level 1: choose a characteristic line of mercury for calibration;

[0035] 3), adjust the xenon lamp light source 1...

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Abstract

Disclosed is a method for absolutely measuring external quatum efficiency of solar batteries via a direct current method. An optical portion consisting of a xenon light source, a focusing lens and a monochrometer provides monochromatic light, an optical closed bin and a dark room shield stray light so as to provide a work environment of the solar batteries, a source meter detects short circuit photocurrent of sample batteries, a monochromatic light power meter detects power of incident monochromatic light, and a micro-computer performs instrument control and data treatment, thereby finally obtaining a single-wave long external quatum efficiency curve line of the solar batteries. The method focuses on direct-current measurement, is absolute measurement and is adaptable to various types of solar batteries. The method has the advantages of high integration level and being precise, reduces cost of solar battery parameter measuring equipment, overcomes technical shortages in a traditional quatum efficiency measuring method, increases signal strength and precision, can provide more comprehensive battery parameter information, and is used for guiding improvement of the preparation technical and performing study of portions of battery mechanisms.

Description

technical field [0001] The invention relates to the field of application and testing of semiconductor materials, in particular to the test of the external quantum efficiency of solar cells, or the photoelectric conversion efficiency of incident monochromatic light, and is a method for absolutely measuring the external quantum efficiency of solar cells by a direct current method. Background technique [0002] Energy is the material basis for the existence and development of human society. With the continuous development of human society, especially after World War II, the world economy has entered a new period of development, and the demand for energy is also increasing day by day. Mineral energy such as coal, oil, and natural gas is consumed in large quantities. Human beings are facing increasingly severe energy crises and environmental crisis. Developing countries face particular problems because of differences in the composition of energy consumption. Taking China as an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/265
Inventor 于涛薛国刚田汉民田志鹏邹志刚
Owner NANJING UNIV
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