磷化銦鎵堆疊矽(GaInP / Si) 太陽電池光電模擬

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姓名

張瑋辰(Wei-Chen Chang) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

磷化銦鎵堆疊矽(GaInP / Si) 太陽電池光電模擬
(GaInP / Si Tandem Solar Cell Simulation)

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摘要(中)

近幾年來，綠色能源的開發有極大的進展，尤其是太陽電池方面。太陽電池莫過於追求高效率，低成本的設計。太陽電池有很多種，其中矽單接面太陽電池製程效率已達25 %，理論只到26 %，為了進一步提昇效率必須採用多接面太陽電池的設計。三五族多接面太陽電池是目前最高效率的太陽電池，其中GaInP/GaAs/Si製程效率已超過44 %，但是有成本高的缺點。本篇論文目的在於提出三五族材料堆疊矽太陽能電池，結合三五族材料能隙選取與成熟的矽太陽電池技術結合，期望達到高效率，低成本的太陽電池。
首先，探討矽基磷化銦鎵太陽電池的模擬，從抗反射層的設計提高短路電流，探討差排缺陷在於各層之間的影響，期望看到差排缺陷的容忍範圍，並探討窗口層能隙和摻雜濃度設計，阻擋少數載子的復合減少缺陷。優化結果短路電流為14.4 mA/cm^2 ，開路電壓為1.32 V，填充因子為86.72 %，效率為16.44 %。
第二部分，探討磷化銦鎵堆疊矽太陽電池，從整體的波長抗反射設計著手，探討頂層磷化銦鎵吸收層厚度選取，期望能達到電流匹配來提昇效率。接著探討差排缺陷和復合速率影響整體多接面太陽電池短路電流和效率，最後再提到穿隧接面摻雜對於整體電池電流連接的影響。最佳短路電流為13.79 mA/cm^2、開路電壓1.92 V、填充因子 85.17 %、效率為22.48 %。

摘要(英)

There are a variety of green energy. The solar cell is discussed the most. High efficiency and low cost are the goal. The theoretical efficiency of single silicon solar cell is 26%. The multijunction design is the way to get high efficiency. The best efficiency now is III-V multijunction solar cell, but III-V multijunction solar cell is expensive. We use III-V material which can enhance the absorption in specific wavelength, and the mature fabrication technology of silicon material. We simulate GaInP / Si tandem solar cell for high efficiency and low cost.
First, we simulate and discuss the GaInP on Si substrate solar cell. We discuss the design of antireflection coating, the threading dislocation density, the bandgap of window layer, the recombination velocity in window / emitter interface, and the doping of window layer. The optimized result are listed below. The short current density is 14.4 mA/cm^2.The open circuit voltage is 1.316 V. The fill factor is 86.72 %. The efficiency is 16.44 %.
Second, we discuss the GaInP / Si tandem solar cell. We discuss the overall antireflection coating, the top cell thickness for current match. We also discuss how the tunnel junction doping affects the whole solar cell. The optimized result are listed below. The result of the efficiency is 22.48 %. The short current density is 13.79 mA/cm^2.The open circuit voltage is 1.915 V. The fill factor is 85.17 %. The efficiency is 22.48 %.

關鍵字(中)

★ 三五族太陽電池
★ 多接面太陽電池
★ 差排缺陷
★ 穿隧接面

關鍵字(英)

★ III-V multijunction solar cell
★ Threading dislocation
★ Tunnel junction

論文目次

摘要 ⅰ
Abstract ⅱ
致謝 ⅲ
目錄 ⅳ
圖目錄 ⅶ
表目錄 xii
第一章緒論 1
1.1 研究背景 1
1.2 研究動機與目標 2
1.3 論文架構 4
第二章文獻回顧與基本原理 5
2.1 高效率太陽電池 6
2.1.1 薄膜矽多接面太陽能電池 7
2.1.2 三五族多接面太陽電池 8
2.1.3 三五族堆疊矽太陽電池 9
2.2多接面太陽電池結構 10
2.3 太陽電池基本原理 11
2.4太陽電池效能 13
2.5穿隧接面 16
2.6差排缺陷 19
第三章 Synopsys Sentaurus TCAD模擬軟體介紹 22
3.1 Synopsys Sentaurus TCAD模擬原理 23
3.2 Synopsys Sentaurus TCAD網格取法 23
3.3 Synopsys Sentaurus TCAD光傳遞模型 25
3.4 Synopsys Sentaurus TCAD模擬方法 25
3.4.1 Sentaurus Workbench (SWB) 26
3.4.2 Epi、Mat 26
3.4.3 Sentaurus Structure Editor (SDE) 26
3.4.4 Sentaurus Device (SDEVICE) 27
3.4.5 Sentaurus Visual、Inspect 27
第四章矽基磷化銦鎵太陽電池模擬 29
4.1 模擬模型與參數 30
4.2 抗反射層厚度對元件特性影響 31
4.3 差排缺陷對元件特性影響 36
4.4 窗口層能隙與復合速率對元件特性影響 40
4.5 窗口層摻雜濃度與復合速率對元件特性影響 47
4.6 優化結果 52
第五章磷化銦鎵堆疊矽太陽電池模擬 54
5.1 模擬模型與參數 55
5.2 頂層太陽電池厚度與抗反射層電流匹配對整體特性影響 58
5.3 頂層差排缺陷對整體特性影響 62
5.4 頂層復和速率對整體特性影響 65
5.5 穿隧接面摻雜與整體元件特性影響 67
5.6 優化結果 70
第六章結論 74
6.1 結論 74
6.2 未來展望 76
參考文獻 77

參考文獻

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指導教授

張正陽(Jeng-yang Chang)

審核日期

2014-7-24

推文