鈣鋁矽酸鹽玻璃的熱行為

Thermal Behavior of Calcium Aluminosilicate Glass

周瑞彬(Jui-Pin Chou)

指導教授 ： 徐錦志

大同大學/工程學院/材料工程學系所/碩士(2010年)

摘要

多晶矽太陽能電池可分為兩種，一種是在多晶矽晶圓基板上經蝕刻及擴散等程序製作p-n接面，另一種是在基板沉積上多晶矽薄膜的線路，後者可節省矽原料的成本。若以非矽基板(例如陶瓷基板)取代矽基板，可進一步降低生產成本。但陶瓷基板與矽間的熱膨脹係數(CTE)差異過大，故在兩者中間選擇適合玻璃當中間層(耐CVD溫度、粗糙度小、CTE介於矽和基板間)。以CaO-Al2O3-SiO2玻璃為主添加不同種元素來改善玻璃熱性質，匹配陶瓷基板。這篇選擇添加B2O3、GeO2、La2O3和Ba2O3來調整玻璃的熱特性。添加前三者對玻璃黏度而言會降低黏度；添加最後一個會提高玻璃的黏度。從玻璃熱膨脹性質來看，添加B2O3和Ba2O3會降低熱膨脹係數，而添加GeO2和La2O3會提高熱膨脹係數。

關鍵字

鈣鋁酸鹽 ； 玻璃

並列摘要

There are two kinds of making solar cell, one is that a polysilicate wafer makes p-n junctions by etching and diffusion methods, other is depositing lines of polysilicate thin film on a substrate, the latter could save cost of raw materials of silicate. If we use foreign substrates to substitute for polysilicate wafer substrates, the cost could save much more. But thermal expansion coefficient of ceramic substrates is much larger than silicate, so we chose a suitable glasses as a interlayer(enduring CVD temperature、 small roughness、 CTE between polysilicates and substrates). CaO-Al2O3-SiO2 glass as a main component add different elements to modify thermal behavior of glasses, matching the ceramic substrates.This thesis select B2O3、GeO2、La2O3 and Ba2O3 adding to glasses to modified the thermal behavior.Adding three front elements for glasses would decrease viscosity；Adding last element would increase viscosity. From the sigh of the thermal expansion behavior, adding B2O3 and Ba2O3 could decrease the coefficient of thermal expansion, and adding GeO2 and La2O3 could increase the coefficient of thermal expansion.

並列關鍵字

Calcium Aluminosilicate ； glass

參考文獻

[37] W.A. James, H. William and Jr. Dumhaugh, US Pantent 4,180,618.(1989)

[5] J. Zhao, A. Wang, M.A. Green, F. Ferrazza “Novel 19.8% efficient ‘honeycomb’ textured multicrystalline and 24.4% monocrystalline silicon solar cells,” Applied Physics Letters 1998; 73: 1991–1993.

[6] J. Zhao, A. Wang, F. Yun, G. Zhang, D.M. Roche, S.R. Wenham, M.A. Green. “20,000 PERL silicon cells for the ‘1996World Solar Challenge’ solar car race,” Progress in Photovoltaics 1997; 5: 269–276.

[9] R.B. Bergmann , T.J. Rinke, , C. Berge, J. Schmidt, J.H. Werner,.“Advances in monocrystalline Si thin-film solar cells by layer transfer,” Technical Digest, PVSEC-12, June, 2001, Chefju Island, Korea; 11–15.

[10] M. Pauli, T. Reindl, W. KruK hler, F. Homberg, J. MuK ller, Sol. Energy Mater. Sol. Cells ,41/42 119 (1996).