研究生: |
張謙維 Chien-wei Chang |
---|---|
論文名稱: |
利用油墨網印法製備硒化銅銦鎵薄膜太陽能電池及其分析 Preparation and Analyses of CIGSe Thin Films Solar Cells with the Ink-Printing p-Type Absorption Layer |
指導教授: |
郭東昊
Dong-Hau Kuo |
口試委員: |
朱瑾
Jinn P. Chu 何清華 Ching-Hwa Ho |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 材料科學與工程系 Department of Materials Science and Engineering |
論文出版年: | 2011 |
畢業學年度: | 99 |
語文別: | 中文 |
論文頁數: | 129 |
中文關鍵詞: | 薄膜太陽能電池 |
外文關鍵詞: | CIGSe |
相關次數: | 點閱:253 下載:0 |
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近年來,研究者紛紛進行CIGSe太陽能薄膜電池非真空製備的研究,非真空製備方法極多,但其薄膜緻密程度為決定光電轉換效率的關鍵性。
本實驗利用油墨網印法製備銅銦鎵硒薄膜太陽能電池,以不同組成模式(CIGS、Cu2Se、In2Se3、Ga2Se3及Se)配製油墨,且固定薄膜比例為Cu0.8In0.7Ga0.3Se2,藉由適當的液相燒結的方式(一階段和兩階段)搭配不同的液相燒結溫度及冷壓與否對銅銦鎵硒吸收層之特性的影響進行探討,並且透過FE-SEM、XRD及EDS分析銅銦鎵硒之吸收層物理性質。將其各參數製備成元件(Ag/退火/ITO(RF,500 nm)/i-ZnO(RF,50 nm)/CdS(CBD,70 nm)/液相燒結/CIGSe(Printed screen,5 μm)/Mo(DC,800 nm)/Al2O3),利用擬太陽能光測試儀器測試其電池之轉換效率。
經過實驗的顯示結果,網印後且冷壓之兩階段液相燒結的方式(第一階段300 oC,第二階段700 oC~750 oC)所製備之吸收層性質其晶粒為最佳,晶粒大小約為600~700 nm,經由XRD及EDS都可以證明此薄膜為Cu0.8In0.7Ga0.3Se2比例。將不同的組成參數製備元件,三相搭配單相和單相分別可量測出1.1 %及1.5 %的光電轉換效率。
The non-vacuum processes for Cu(In,Ga)Se2(CIGSe) solar cells have gradually attracted the researchers’ attentions. However, the major problem of the non-vacuum processes is the densification and the purity of the p-type absorption layer.
In this study, CIGSe thin film solar cells were prepared by using ink-printing on alumina substrates. The p-type layers with the composition of Cu0.8In0.7Ga0.3Se2 were prepared from the inks containing the single-phase CIGSe powder, the mixed powder of Cu2Se, In2Se3, and Ga2Se3, and the mixture of single-phase powder and the mixed powder at the weight ratio of 50:50. The densification involves the one-step and two-step processes at different sintering temperatures. Some of the specimens were underwent the constrained sintering. The CIGSe solar cell was constituted with the stacking form of Ag/ITO/ZnO/CdS/ink-printing CIGSe/Mo/Al2O3. The quality of the absorption layer was analyzed by X-ray diffractometer and field emission of scanning electron microscope equipped with energy dispersive X-ray spectrometer. The performance of the solar cells was evaluated under the standard AM1.5 illumination.
The experimental results showed that the best condition for the ink-printing CIGSe thin film with a thickness of 5 um was using the two-step process and the single-phase powder, sintering at 700–750 oC, and undergoing constrained sintering. The CIGSe films had the desired composition, good crystallinity, and the grain size of 600–700 nm. The stacked solar cells displayed the power conversion efficiencies of 1.1% and 1.5% for the cells with the CIGSe layers prepared from the 50/50 powder and the single-phase powder.
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