高效率穩定型染料敏化太陽能模組於不同測試條件下元件表現之研究;Study of High Efficiency Stable Dye-sensitized Solar Module under Different Test Condition

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Title:	高效率穩定型染料敏化太陽能模組於不同測試條件下元件表現之研究;Study of High Efficiency Stable Dye-sensitized Solar Module under Different Test Condition
Authors:	黃詩翰;Huang,Shih-Han
Contributors:	化學工程與材料工程學系
Keywords:	染料敏化太陽能電池;模組;穩定性
Date:	2016-07-27
Issue Date:	2016-10-13 12:42:59 (UTC+8)
Publisher:	國立中央大學
Abstract:	太陽能電池的蓬勃發展，其中染料敏化太陽能電池以光電轉換效率較不受光強度及入射角度影響，在室內光下應用極具發展潛力。本研究中以10 cm×10 cm DSSC模組探討在不同條件(光強度、光入射角度及不同溫濕與照度效應)探討其性能變化及穩定性表現，並針對綜合結果條件進行DSSC模組戶外實際測試。首先探討染料吸附濃度、添加共吸附劑及二氧化鈦前處理緻密層對於模組在各種光強度下的光伏表現進行研究比較，其中以前處理二氧化鈦緻密層在弱光條件下對於元件效能表現影響最明顯。最佳DSSC模組在低照度約(1000 Lx)下效率可達16%，總輸出功率2.6 mW，於更低光強度(約100 Lx)DSSC模組效率仍可維持>10%(優於矽晶與矽薄膜太陽能電池)，證明DSSC在各種光強變化下的應用優勢。在探討入射光角度影響，為了減少非垂直入射光反射問題，利用規則性排列SiO2球體於玻璃表面聚光，能在入射光角度大(> 50o)時比無表面處理條件減少約10%反射率，增加入射光量，且在全角度功率累積量測下，比未表面處理之DSSC模組功率累積值約提升了11%。在以加速老化測試元件穩定性方面，則討論三種加速老化測試，在溫度應力測試部分，分別為-15oC經過1200小時未衰減及在65oC經過1200小時連續測試後，相對效率僅減少12%。而DSSC模組經過20次溫度循環測試(-10oC <-> 65 oC)後仍維持原始效率95%。另外，在1 Sun/65oC連續照光1000小時後相對效率減少7%，而1550小時後相對效率僅減少8%，經過換算模組壽命可達4.7年。至於在弱光條件1000 Lx下連續照光1000小時，相對效率降低2%，經過3000小時後相對效率也僅降低11%。最終將DSSC模組進行戶外量測從2015年6月10日至2016年6月17日超過一年的實際觀測，模組仍保持穩定表現，且經過實際基板的溫度量測，年平均溫度約30~35oC，並再經修正計算後，DSSC模組穩定性可達9.5年。 ;In this study, 10 cm × 10 cm DSSC modules were used to investigate the performances and stability under various test conditions (light intensity, angle of light, temperature, humidity and different light sources). The DSSC module also applies outdoor test for more than 360 days. First, the effect of concentration of dye solution, co-adsorbent and pre-treatment of photoanode on photovoltaic performance of DSSC module under various light intensities was studied. The pre-treatment of TiO2 compact layer has obvious effect on FF under lower light intensity. The best performance of DSSC modules shows efficiency up to 16% under 1000 Lx, and the DSSC modules still maintain >10% under a lower light intensity (about 100 Lx). At impact of the incident angle, in order to reduce non-perpendicular incident light problem, a regular arrangement SiO2 sphere which on the glass surface compare to no surface treatment reduced the reflectance about 10% when the incident angle >50o. DSSC module with surface SiO2 order structure enhances the cumulative power (Pout) value of 11% to that without any surface treatment. In the accelerated aging test, the DSSC module keep stable at -15oC for more than 1200 hours, and the relative efficiency only reduced by 12% at 65oC for more than 1200 hours. Furthermore, the module remains the original efficiency of 95% after 20 times thermal cycles test. In addition, relative efficiency of DSSC module decreased by 8% under continuous illumination (1sun/65oC) for more than 1550 hours. We consider the aging factor to fix module life up to 4.7 years. Under indoor continuous illumination (1000 Lx) over 1000 hours, the relative efficiency is reduced by 2%. After 3000 hours, the relative efficiency only reduces 11%. Finally, DSSC modules remained stable performance for outdoor test during 10 June 2015 to 17 June 2016, and the DSSC module life time can fixed to 9.5 years after amendment.
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