摘要
温度是影响太阳电池性能的关键因素之一。本文采用光电耦合模型研究了温度对光子晶体型纳米结构薄膜硅太阳电池性能的影响,研究了温度对其光学吸收特性与电学特性的影响。研究发现,随着温度的升高,其光学吸收特性增强,而电学特性降低,整体转换效率降低。光学吸收的增强弥补不了电学特性的减小,因此导致整体转换效率减小。此外,我们还研究了热膨胀系数对纳米结构薄膜太阳电池性能的影响,研究发现,热膨胀系数的影响可以忽略。
Temperature is a critical factor in affecting the performance of solar cells.In this paper,photoelectric coupling model has been carried out to investigate how temperature affects the performance of thin-film solar cells with 2D nanohole photonic crystal structures.Both the temperature dependence of optical and electrical characteristics is studied.It is found that the increase of temperature is positive for optical properties whereas that is negative for electrical properties.The slight increase of optical properties can not compensate the dramatic decrease of electrical properties in nanostructured thin-film solar cells with the increase of temperature.Therefore,the power conversion efficiency decreases with increasing temperature.In addition,the effect of thermal expansion coefficient is investigated as well and the results indicate that this effect can be neglected.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2015年第4期879-883,共5页
Journal of Engineering Thermophysics
基金
国家自然科学基金项目(No.51336003)
江苏省333科研项目(No.BRA2011134)
关键词
薄膜太阳电池
温度效应
光电耦合模型
thin-film solar cells
temperature effect
photoelectric coupling model