Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/17323
標題: 熱溶劑法製作Sb2Se3量子點液態敏化太陽能電池
Sb2Se3 quantum dot sensitized liquid junction solar cells prepared by solvothermal reactions
作者: 吳振曄
Wu, Jhen-Ye
關鍵字: 熱溶劑
solvothermal
硒化銻
量子點
太陽能電池
quantum dots
solar cell
antimony selenide
出版社: 奈米科學研究所
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摘要: 本實驗以Sb2Se3 量子點作為光敏化劑,我們利用熱溶劑法(solvothermal)來合成Sb2Se3 量子點在TiO2上,為了要確認此材料為Sb2Se3,以及確認其晶格型態,我們樣品進行X-ray繞射,我們使用穿透式電子顯微鏡分析(TEM),知其量子點大小約為10-15 nm,並可以由紫外-可見光譜儀(UV-Vis spectroscopy)分析此材料所吸收的波段。從吸收光譜可以看到Sb2Se3量子點吸收入射光的量很少,這是後面所需改進的,經過計算後Sb2Se3量子點的Eg=2.6 eV。 本實驗室目前所採用的光電極為使用二氧化鈦的緻密層、二氧化鈦工作區域、散射層以及碘電解液,我們並將其組裝成太陽能電池並進行量測。改變的參數有反應時間,分別為13、16以及20小時,並在反應時間為16小時獲得到最高效率。 散射層層厚度的改變,在燒結前分別是60 μm以及120 μm,較厚的散射層會造成電解液不易流動使得電子不易傳輸,而造成效率下降。並對SbeSe3量子點進行外部量子效率量測,範圍是400-1000 nm,在400-500 nm之間可以得到最高的光電轉換效率達40%。 目前所獲得的最佳電池轉換效率為0.77 %,開路電壓為0.51V,填充因子為54.6% 電流密度2.75mA/cm2。
We want to use the Sb2Se3 QDs be the photosensitizer .We synthesized the Sb2Se3 quantum dot on the surface of a nanoporous TiO2 by solvothermal.We want to confirm this material is Sb2Se3 and its crystallinity and morphology, so we do the x-ray diffraction(XRD) and the Transmission Electron Microscopy(TEM).The QDs size is 10-15 nm. The optical properties of these Sb2Se3 QDs were characterized by UV-Vis spectroscopy.The photoelectrode including a TiO2 under layer ,TiO2 working area,scattering layer,I-/I-3 electrolyte. We change the reacted time about 13hrs,16hrs and 20hrs.The best condition is reacted 16 hrs. We use the polyiodide electrolyte,because the polysulfide electrolyte will reacted with the counterelectrode (Pt). The best yielded a power conversion efficiency is 0.77%,an open circuit voltage of 0.51V,short-circuit current of 2.75mA/cm2.
URI: http://hdl.handle.net/11455/17323
其他識別: U0005-1508201315165300
文章連結: http://www.airitilibrary.com/Publication/alDetailedMesh1?DocID=U0005-1508201315165300
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