研究生: |
蔡豫翔 Yu-Hsiang Tsai |
---|---|
論文名稱: |
Cu2ZnSn(Sx, Se1-x)4奈米晶體作為吸光層之薄膜太陽能電池 Cu2ZnSn(S,Se)4 Nanocrystals as Light Harvesting Layer for Thin Film Solar Cells |
指導教授: |
陳良益
Liang-Yih Chen |
口試委員: |
陳貞夙
Jen-Sue Chen 吳季珍 Jih-Jen Wu 陳景翔 Ching-hsiang Chen |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 化學工程系 Department of Chemical Engineering |
論文出版年: | 2014 |
畢業學年度: | 102 |
語文別: | 中文 |
論文頁數: | 114 |
中文關鍵詞: | 硫化銅鋅錫 、奈米晶體 、硒化反應 |
外文關鍵詞: | CZTS, nanocrystals, selenization reaction |
相關次數: | 點閱:165 下載:2 |
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近年來,硫化銅鋅錫奈米晶體備受期待,因為其具有低成本、毒性較低、地殼蘊藏量高、吸收係數高(>104 cm-1)等特性。因此,可廣泛用於太陽光能的吸收並加以運用。且其能隙值約為1.3~1.8 eV,適合用於薄膜太陽能電池吸收層之使用。在本研究,主要使用注入法以醋酸銅、含水氯化錫與碘化鋅及硫粉為反應前驅物,溶在油胺中並在高溫下反應預合成硫化銅鋅錫奈米晶體。隨後,將硫化銅鋅錫奈米晶體與己硫醇配製成漿料,進行薄膜塗佈的探討。在此,比較不同的塗佈方法對於硫化銅鋅錫薄膜成膜之性質比較。同時,藉由改變不同硒化反應溫度、升溫時間及持溫時間,探討薄膜之成膜性及薄膜性質分析,並以場發式電子顯微鏡觀察薄膜成膜性,以及拉曼光譜與XRD光譜分析薄膜轉相及晶粒成長。
Recently, copper zinc tin sulfide (Cu2ZnSnS4, CZTS) has attracted great attention as a material of earth-abundant, non-toxicity, and with novel absorption coefficient (>10-4 cm-1) to become a promising solid-state photovoltaic device material. CZTS is suitable light-harvesting materials for thin film solar cell because of band gap is about 1.3-1.8eV. In this study, CZTS nanocrystals are synthesized by injection method using copper (II) acetate, zinc iodide, tin(IV) chloride tetrahydrate, elemental sulfur as precursors in the presence of oleylamine at high reaction temperature. CZTS nanocrystals with hexanethiol formulated as ink to coat on the Mo-coated glass substrate. The CZTS thin films were coated with different coating methods for comparison. To investigate the nature of the film and analysis the film properties by changing the selenization reaction time, heating time and maintain time.The thin film morphology is observed by high resolution field-emission scanning electron microscope. By Raman and X-ray diffractometer (XRD) analysis to demonstrate the phase transition and grain growth.
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