斜向型非均向TiO_2緻密層應用於染料敏化太陽能電池

The Application of a Slant-Type Anisotropic TiO_2 Compact Layer in Dye-Sensitized Solar Cells

黃嘉輝(Chia-Hui Huang) ； 劉竹峰(Ju-Feng Liu)

《中華科技大學學報》 59期 (2014/04) Pp. 93-101

摘要

本研究提出在染料敏化太陽能電池使用斜向型非均向TiO_2緻密層結構，使緻密層結構更為密實以減少逆反應，並可於緻密層介面形成特殊紋理提升光捕捉效率，而使電池光電轉換效率大幅提升。非均向TiO_2緻密層以射頻濺鍍法，藉由調整載具角度以20°、60°及80°、三種角度，將TiO_2薄膜沉積在ITO導電玻璃上，以製作染料敏化太陽能電池，另外我們亦製作傳統0°之非均向TiO_2緻密層以作為比較。實驗結果顯示，將非均向TiO_2緻密層之奈米柱做傾斜後，電池轉換效率可由傳統0°之1.58%，分別對應20°、60°及80°三種沈積角度，提升至2.66%、3.18%、4.38%，有非常好的改善效果，且改善程度隨沉積角度增加而提升。

關鍵字

緻密層 ； 染料敏化太陽能電池 ； 非均向 ； 濺鍍 ； 二氧化鈦

並列摘要

We present a slant-type anisotropic TiO_2 compact layer applied on dye-sensitized solar cells (DSSC). Because the back reaction is reduced owing to the denser compact layer structure and the light harvesting efficiency is enhanced owing to the special texture on the surface of the compact layer, the efficiency of the conversion of solar energy to electricity is significantly improved. The slant-type anisotropic TiO_2 compact layers were grown on ITO conductive glass substrates using radio frequency sputtering and then DSSC were produced for evaluating the effect of the compact layers in DSSC. By adjusting the angle of the vehicle at 20°, 60°and 80°, the TiO_2 films were deposited. We also grew conventional vertically aligned (0°) anisotropic TiO_2 compact layers for comparison. Experimental results show that the average conversion efficiency of the conventional DSSC with 0° anisotropic compact layer is 1.58%, and the average efficiency of the DSSC with 20°, 60°and 80° depositing-angle anisotropic compact layers is 2.66%, 3.18% and 4.38%, respectively. The effect of the slant-type anisotropic TiO_2 compact layer in DSSC is very prominent, and the effect is improved with increasing the depositing-angle of the anisotropic TiO_2 compact layer.

並列關鍵字

compact layer ； dye-sensitized solar cells ； anisotropic ； sputter ； TiO_2