基于gasb的热光伏电池p型发射极厚度的优化

W. E. Rashid, P. Ker, M. Z. Jamaludin, N. A. Rahman, M. A. Khamis
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引用次数: 1

摘要

热光伏(TPV)电池将热能直接转化为电能,因其潜在的高输出功率密度而备受关注。由于其转换卡诺效率的能力,优化这些电池是必不可少的,以进一步提高其性能和效率。本文利用Silvaco TCAD仿真软件对基于锑化镓(GaSb)的TPV电池的p型发射极厚度进行了优化。本文的模拟工作与实验工作在GaSb TPV电池的电学特性和效率方面有很好的一致性。在0.15 ~ 1.20µm的p型发射极厚度范围内进行了进一步的仿真,结果表明,随着p型发射极厚度的增加,电池的开路电压(Voc)增加,短路电流密度(Jsc)降低。由于Voc的增加速度快于Jsc的减少速度,因此在0.85µm的最佳厚度下获得了更高的最大功率效率。结果表明,在AM1.5照明条件下,当p型射极厚度从0.15µm增加到0.85µm时,功率效率从5.91%增加到6.63%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimization of p-type Emitter Thickness for GaSb-Based Thermophotovoltaic Cells
Thermophotovoltaic (TPV) cells that convert thermal heat directly into electricity are attracting attention as they potentially produce high output power densities. Owing to its capability to convert with a Carnot efficiency, an optimization of these cells is essential to further enhance their performance and efficiency. This paper focuses on the optimization of p-type emitter thickness of Gallium Antimonide (GaSb) based TPV cell using Silvaco TCAD simulation software. The simulation works in this paper were validated by having a good agreement with those from the experimental work in terms of the electrical characteristics and efficiency of the GaSb TPV cell. Further simulation was done with different p-type emitter thicknesses ranging from 0.15 µm to 1.20 µm, It was demonstrated that the open circuit voltage (Voc) of the cell increases while the short-circuit current density (Jsc) decreases with increasing p-type emitter thickness. Since the rate of increasing Voc is faster than that of decreasing Jsc, higher maximum power efficiency was obtained at an optimum thickness of 0.85 µm. It was found that, under AM1.5 illumination condition, an increment of power efficiency from 5.91 % to 6.63 % was achieved when increasing p-type emitter thickness from 0.15 µm to 0.85 µm.
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