雙層抗反射膜覆蓋三接面三－五族太陽電池之研究

Study of Double Layered Antireflection Coating Covered on Triple-Junctions Ⅲ-Ⅴ Solar Cell

鄭竣謙(Chun-Chien Cheng)

指導教授 ： 賴再興 ； 吳志宏 ； 鄭傑

中原大學/理學院/應用物理研究所/碩士(2006年)

https://doi.org/10.6840/cycu200600285

摘要

對太陽電池而言，元件表面之反射率扮演了相當重要的角色；在本篇報告中，我們首先使用模擬軟體（Film Star）設計太陽電池的氧化鈦/氧化鋁與氧化鈦/氧化矽雙層抗反射膜，接著，藉由電流電壓特性與頻譜量測，探討氧化鈦/氧化鋁與氧化鈦/氧化矽雙層抗反射膜對於太陽電池特性的影響，並與氮化矽單層抗反射膜做對應的比較。實驗結果顯示，雙層抗反射膜對於三接面三－五族太陽電池的短路電流及能量轉換效率皆有提升的現象，其最大轉換效率達到24%，短路電流提升幅度約32％左右。本篇也進行了太陽電池電極歐姆接觸的實驗，結果顯示，在鍺基板上的鎳/金/銀歐姆接觸，在回火溫度350℃，回火時間20秒時，具有最低的特徵電阻函數，其值為3.76×10-5Ω- cm2。

關鍵字

歐姆接觸 ； 太陽電池 ； 抗反射膜

並列摘要

The reflectance on the device surface influences greatly the energy conversion efficiency of a solar cell and should be considered as an important role concerned with the practical use of the solar cells. In this study, we frist used the simulation software Film Star to design the TiO2/Al2O3 double-layered antireflection coating and the TiO2/SiO2 double-layered antireflection coating. Then, via the current-voltage characteristics and the spectral response measurements,we investigated the effect of the TiO2/Al2O3 double-layered antireflection coating and the TiO2/SiO2 double-layered antireflection coating on the performance of the solar cells, and compared the corresponding properties with the Si3N4 single-layered antireflection coating. Our results showed that, solar cells with double-layered antireflection coating have improved both the short-circuit current and the energy conversion efficiency of our triple-junction Ⅲ-Ⅴsolar cells. The short-circuit current has been improved by 32% , and the best energy conversion efficiency of 24% can also be achieved.
In this study, we also conducted the experiments of the ohmic contacts on the solar cells. The result of our Ni/Au/Ag ohmic contact on the germanium substrate showed that, for annealing temperature of 350℃, annealing time of 20 second, the lowest specific contact resistance, with the value of 3.76×10-5Ω-cm2, had been abtained.

並列關鍵字

ohmic contact ； solar cell ； antireflection coating

參考文獻

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