奈米粒子光散射之二氧化鈦光阻層應用於染料敏化太陽能電池

Abstract

本研究將以二次電化學陽極處理法製備二氧化鈦奈米管薄膜，運用於正照光式的染料敏化太陽能電池之中。過程中將以純度鈦薄板(99.7%)作為陽極；鉑(Pt)為陰極，浸泡在氟化銨(Ammonium Fluoride, NH4F) 溶質及過氧化氫(Hydrogen peroxide, H2O2)、乙二醇(Ethylene Glycol, EG)溶劑所調配之電解液中進行二氧化鈦奈米管做為光電極的光阻層；利用溶膠凝膠法製備二氧化鈦奈米粒子作為光電極的光散射層與黏著劑的使用；將實驗得到可透光的二氧化鈦薄膜，運用薄膜轉移至FTO導電玻璃上，製備出正照光型式的染料敏化太陽能電池，探討其對於染料敏化太陽能電池光電轉換效率之影響。 在吸附N719染料後，於AM 1.5模擬太陽光照射下(100 mW/cm2)，藉由光電流－電壓（I-V）、入射單色光子-電子轉化效率的量測（IPCE）檢測，當管長在4小時管長為29μm時，最大Voc為0.751 V，Jsc為15.14 mA/cm2，FF為0.74，可得到最佳之光電轉換效率達8.413%，為本實驗室最高效率之結果。

In this study, the major purpose is to apply by two-step electrochemical method prepared of titanium dioxide nanotubes films in the front side of illumination-type dye-sensitized solar cells. To produce TiO2 nanotube, we conducted the experiment through electrochemical method by using high purity titanium (99.7%) as anode and platinum as cathode. The electrolyte is a mixed solution, which is a kind of electrolyte consisting of Ammonium fluoride (NH4F), Hydrogen peroxide (H2O2) and Ethylene glycol (EG) electrolyte solution carried out the deployment of titania nanotubes as photoelectrode photoresist layer. Using sol-gel process of titanium dioxide nanoparticles formulated as a photoelectrode use of light-scattering layer and adhesived. After the adsorption of the dye N719 exposed it to the light. The intensity of the light at AM 1.50 (100 mW / cm2). Utilized photo current – voltage, incident photon-to- current conversion efficiency (IPCE) measurement, when the nanotube length in 4 hours property of the light is 29 μm long with Voc = 0.751 V, Jsc=15.14mA/cm2, FF=0.74 has obtain the best of the photoelectric conversion efficiency of η=8.413% percent, which is measured the highest photoelectric conversion efficiency.