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Title: 染料敏化太陽能電池(DSSCs)之效率影響因素暨其壽命探討
The study of efficiency and life time of the dye-sensitized solar cells
Authors: 陳禾修
Ho- Shiou Cheng
Contributors: 電腦與通訊系碩士班
Keywords: 染料敏化太陽能電池;二氧化鈦;浸鍍法;燒結時間
DSSC;TiO2;dip-coating;sintered duration
Date: 2012
Issue Date: 2012-12-11 14:58:34 (UTC+8)
Publisher: 高雄市:[樹德科技大學電腦與通訊系碩士班]
Abstract: 本篇文章使用低成本的浸鍍技術來製作染料敏化太陽能電池,其中工作電極主要係以型號P25之TiO2粉末所調配的溶液進行製備,由於TiO2的結晶情況會影響電池的效率,在一般熟知450℃的燒結溫度條件下,本研究嘗試探討不同的時間燒結對電池效率之影響。本研究所使用的基板為面積1×1cm2,網目數為300的不鏽鋼網,浸鍍液為P25粉末與IPA混合濃度為15 wt%之溶液,並製作成P25薄膜厚度為10μm的工作電極。經由量測結果顯示,工作電極燒結4小時的元件短路電流7.29 mA,填充因子0.5,其效率為2.45%,而隨著燒結時間增長到16小時,元件的短路電流為7.28mA,填充因子提高到0.58,也使得效率達到2.83%。可以看出由於填充因子的改善,使得最大功率有所提高,這是因為長時間在高溫下,P25晶格間的鍵結會更加的緊密,染料敏化太陽能電池的串聯電阻因而降低,離子中的電子被TiO2還原後可以快速達到外部迴路,減少電子損耗,使得整個電池的效率提高。
In this study, the dye sensitization solar cell (DSSC) is fabricated using the low-cost dip-coating process. The commercial product P25 is adopted as TiO2 source. It has been reported that the grain boundaries is influenced by sintering temperature and time. Since the grain situation of TiO2 affects the DSSC’s efficiency, the influences of various sintering duration against the crystallization are discussed. The substrates are using the 1 cm*1cm stainless steel with 300 meshes. The solution for dip-coating is a mixture of P25 powder and the isopropyl alcohol (IPA) with 15 wt%. The working electrode is repeat coating by immersion until the TiO2 film thickness of 10 um. The oven is setting to a regular temperature of 450 ℃ for agglutination. From the experimental results, the short-circuit current (Jsc) of 7.29 mA, the filling factor (F. F.) of 0.5 and the efficiency of 2.45% is obtained for the device with 4 hours sintering. As the sintering time increases to 16 hours, the F. F. is improved to 0.58 and results in an efficiency of 2.83%. The power improved following with the increases of F. F. is believed to be the internal resistance reducing. Parts of the grain boundary between TiO2 dismissed because of the long-term agglutination. The electron generated at the surface of working electrode transfer through the zone with low resist is contributed to the better performance of DSSC.
Appears in Collections:[電腦與通訊系(所)] 博碩士論文

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