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Research of Optical System in Spectral Response Measurements of Multi-Junction Solar Cells

Author: ZhangXianFeng
Tutor: ZhangSiXiang
School: Hebei University of Technology
Course: Precision instruments and machinery
Keywords: Multi-junction solar cells Spectral response Optical system Grating monochromator
CLC: TM914.4
Type: Master's thesis
Year: 2007
Downloads: 341
Quote: 1
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Abstract


Monolithic stacked multi-junction photovoltaic cells have high photoelectric conversion efficiency the power area ratio and power-to-weight ratio and large excellent technical indicators, has been the importance attached to space solar cell research institutions around the world. Multi-junction solar cells for space applications is the main development direction of future multi-junction solar cells. The main technical parameters of multi-junction solar cell testing: the spectral response of the solar cell, the short-circuit current, open circuit voltage and photoelectric conversion efficiency, including multi-junction solar cell spectral response of the test has been subject to solar cell development and research units, the attention of scholars. Many solar cell researchers have done a lot of work, a series of test specifications and advanced photovoltaic measurement laboratory. In multi-junction solar cell spectral response test, the foreign related detection theory and practical detection device. Although China spectral response of single-junction cells the test achieved certain results, but have not yet achieved a major breakthrough in the multi-junction solar cells, especially in multi-junction solar cell spectral response test reports are also few and far between. Dependent on imports of foreign equipment will definitely affect the multi-junction solar cells further theoretical explorations and scientific experiments. Important application prospects based on multi-junction solar cells, its theoretical method and test device to become an innovative subject. Subject to triple-junction solar cells GaInP / Ga (In) As / Ge as an object of study. For multi-junction solar in problem analysis, concluded on the basis of single-junction solar cell spectral test system, three-grating monochromator design their own to solve the existing domestic grating monochromator narrow spectral range (400-1100nm); battery special structure and spectral response characteristics of research in optical bias system, through a light source, interference filters, tunable diaphragm system to get reasonable bias light source; short wavelength radiation is very weak and difficult dual light source solution, using a xenon lamp of the short wavelength irradiance in the short wavelength region of 350-450nm, and the light source as a monochromator using Halogen as a light source in the other wavelength range; structure solves the complicated structure of the optical path of optical fiber and the fly's eye lens. issues; achieve the grating monochromator computer automatic control system software independent design, measurement data acquisition, processing and analysis; final completion of the overall system test theory and key technology research available for the development of a set of practical monolithic stacked multijunction solar cell spectral response of the test system has laid a good foundation.

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