本研究利用不同的保護劑與螯合劑，以二階段水熱反應合成出不同尺寸尖柱狀奈米二氧化鈦，經由TEM、XRD、BET、SEM鑑定，尖柱狀奈米二氧化鈦（EOA）擁有一維結構、純Anatase的晶型、較大的表面積及良好熱穩定性，其電池效能可達5.64，而商用品P25之電池效能為5.07。
由於EOA具有較佳的透明度而缺乏散射效果，為了進一步提升效能，在此以三種較大尺寸尖柱狀奈米二氧化鈦作為散射層搭配EOA使用，分別是TMA-L、TMA-M、TMA-S，其大小分別為500～600nm、250nm、200nm。效能以EOA和TMA-L的組合效果最好，其值為5.84。由UV-vis鑑定可知TMA-L擁有較佳的散射效果，且由IPCE圖可得知於長波長區域的光電轉化效率有明顯提升。
但由於散射層表面積過低，因此本研究便再進一步使用混摻的方法，有效的提升散射層之表面積，進而得到最佳的效能。在此使用EOA及TMA-L進行混摻，混摻的重量比分別為 3：1、1：1、1：3三種重量比，且分別稱為EL31、EL11及EL13，其效能以EOA和EL11的組合最好，其值為6.08。由IPCE可看出混摻之後於長波長區域僅比EOA和TMA-L的組合略低，證明依舊保持高度的散射性；而在短波長區域則比混摻前高，證明表面積可因混摻而有所提升。

The size-varied nanorods TiO2 have been synthesized with different kind of stabilizer and chelating agent by two steps hydrothermal reaction, and characterized by TEM, XRD, BET, SEM. The nanorods TiO2 (EOA) has 1-D structure, pure anatase, higher surface area, good thermal stability and the light-to-electricity conversion efficiency is 5.64%. Commercial TiO2 P25 only reached 5.07%.
Owing to EOA have better transparency, but lack of scattering property; three kinds of larger nanorods TiO2 have been synthesized as scattering layer particles: TMA-L, TMA-M, TMA-S; the length are about 500~600nm, 250nm, 200nm, respectively. The double layer structure of EOA and TMA-L have better efficiency 5.84% due to TMA-L have better scattering property characterized by UV-vis, and the incident photon-to-current efficiency (IPCE) data show that the conversion efficiency higher than monolayer EOA at high wavelength region.
Due to scattering layer couldn’t provide enough surface area, three different EOA/TMA-L composites are blended with 75wt% (EL31), 50wt% (EL11), 25 wt% (EL13) EOA. Higher efficiency of 6.08% is achieved by
double layer structure of EOA and EL11 and the IPCE data show that the conversion efficiency similar to double layer structure of EOA and TMA-L at high wavelength region but higher at low wavelength region. The data show EL11 not only have high scattering property but also have large surface area.

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