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The effect of spectral albedo on amorphous silicon and crystalline silicon solar photovoltaic device performance

机译：光谱反照率对非晶硅和晶体硅太阳能光伏器件性能的影响

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摘要

In this paper the theory of mismatch factor of the terrestrial solar spectrum is extended to more accurately represent the irradiance available to specific types of photovoltaic (PV) materials from surface albedo. Using spectra derived from the SBDART radiative transfer model, the effects of a spectrally responsive albedo are illustrated by the differences between the spectrally weighted albedo of hydro-genated amorphous silicon (a-Si:H) and crystalline silicon (c-Si)-based PV technology compared to traditional spectral-integrated albedo predictions. In order to quantify this effect for varying representative spectra, spectra for cloud optical thicknesses from 0 to 150 were investigated. Grass was found to be a poor reflector in the a-Si:H spectral response range with a spectrally responsive albedo of 0.08-0.07 as cloud optical thickness increased from 0 to 150, whereas snow is a good reflector with a relatively constant spectrally responsive albedo of 0.94 as cloud optical thickness increased from 0 to 150. For c-Si PV systems the spectrally responsive albedo for snow and grass were found to be 0.87-0.91 and 0.24-0.15 as cloud optical thickness increased from 0 to 150, respectively. These values can be compared to the albedo typically predicted from spectral integration relative to an AM 1.5 spectrum of 0.78 for snow and 0.23 for grass. On a yearly basis, the use of improper albedo values can lead to an under-prediction of system yields of 0.04%, 2.4%, and 10.5% for systems at 25°, 40°, and 90° tilt from the horizontal, respectively. This can lead to improper PV systems optimization and masking of other loss mechanisms. The results of this study have implications for both solar systems evaluation and systems design, and supports further research on tailoring PV technologies specifically to the climate and geographic location where they are deployed.
机译：在本文中，扩展了地面太阳光谱失配因数的理论，以更准确地表示表面反照率可用于特定类型的光伏（PV）材料的辐照度。使用源自SBDART辐射传递模型的光谱，通过氢化非晶硅（a-Si：H）和基于晶体硅（c-Si）的光谱加权反照率之间的差异来说明光谱响应反照率的影响与传统的光谱综合反照率预测相比，PV技术具有优势。为了量化代表变化的光谱的这种影响，研究了从0到150的云光学厚度的光谱。当云的光学厚度从0增加到150时，草在a-Si：H光谱响应范围内具有较差的反射率，其光谱响应反照率为0.08-0.07，而雪是具有相对恒定的光谱响应反照率的良好反射器当云光学厚度从0增加到150时，其反射率为0.94。对于c-Si光伏系统，随着云光学厚度从0增加到150，雪和草的光谱响应反照率分别为0.87-0.91和0.24-0.15。可以将这些值与通常根据光谱积分预测的反照率进行比较，相对于AM 1.5光谱，雪为0.78，草为0.23。每年，使用不正确的反照率值可能会导致分别相对于水平方向倾斜25°，40°和90°的系统的系统产率分别低估0.04％，2.4％和10.5％。这可能导致不正确的光伏系统优化和其他损失机制的掩盖。这项研究的结果对太阳能系统评估和系统设计均具有影响，并支持针对光伏技术进行专门针对气候和地理位置的进一步研究。

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  • 来源
    《Solar Energy》 |2013年第5期|233-241|共9页
  • 作者

    Rob W. Andrews; Joshua M. Pearce;

  • 作者单位

    Department of Mechanical and Materials Engineering, Queen's University, Canada;

    Department of Materials Science and Engineering, Michigan Technological University, USA,Department of Electrical and Computer Engineering, Michigan Technological University, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    albedo; PV; amorphous silicon; crystalline silicon; reflection; spectral mismatch factor; spectral albedo;

    机译：反照率PV;非晶硅晶体硅反射;光谱失配因子光谱反照率;

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