混相二氧化鈦光陽極的製備與染料敏化太陽能電池的應用

Preparation and Characterization of Mixed-phase TiO2 Photoelectrode for Dye-sensitized Solar Cells

許懿文(Yi-Wen Hsu)

指導教授 ： 蘇昭瑾

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2009年)

https://doi.org/10.6841/NTUT.2009.00196

摘要

染料敏化太陽能電池由於具高效率以及低成本的優勢，近年來成為學者注目的焦點。對於染料敏化太陽能電池而言，二氧化鈦扮演著非常重要的角色；晶相的不同以及顆粒的形狀與大小，皆會影響染料吸附的多寡、電子傳遞和電解液的擴散效應，進而影響到電池的光電轉換效率。
本文主要可以分成兩個部份，第ㄧ主要針對二氧化鈦不同晶相做不同比例掺混，以尋找二氧化鈦奈米粒應用於染料敏化太陽能電池的最佳比例。第二將我們找到的最佳掺混比例再加入散射層，探討其光電轉換效果。
第一部份，以正四丁基氧化鈦(Ti

關鍵字

二氧化鈦 ； 鋭鈦礦 ； 金紅石 ； 奈米粒 ； 奈米棒 ； 晶相掺混 ； 染料敏化太陽能電池

並列摘要

Dye sensitized solar cells (DSSCs) have been invested much attentions in possibilities of high solar-electrical energy conversion efficiency and low fabrication cost.For DSSCs, the TiO2 is one of the most important constituent affecting the cell performance. The crystal phase, particle shape, and size of TiO2 will all affect the dye adsorption, electron transport, and electrolyte diffusion in the cell as well as the light-to-electricity conversion efficiency.
This thesis was divided to two part, In the first part, a systematic investigation of the influence of mixed-phase TiO2 with various aTiO2 to rTiO2 ratio (A/R) toward the DSSCs efficiency. In the second part, I will discuss the scattering layer effect for the mix-phase TiO2 film.
Part I. The pure Anatase and Rutile TiO2 were synthesized by hydrolysis of titanium tetra-n-butoxide in acetic acid and in hydrochloric acid repectively, followed by hydrothermal treatment. It was found that the phase-composited TiO2 showed enhanced DSSCs efficiency (η) compared to pure Anatase and/or rutile TiO2. The most optimum value for η is 7.066 % with Anatase/rutile ratios of 9:1 with Ru-bipyridine dye (Solaronix N719). The plausible explaination for the correlation between Anatase/rutile ratio of the TiO2 films and the corresponding DSSCs efficiency was proposed and discussed based on the TiO2 nanocrystal and film properties.
Part II. Three different TiO2 particles of QF-Ti-1125F(200 nm)、QF-Ti-1125G(400 nm) and Flower-like(400 nm) were used for a scattering overlayer for mixed-phase TiO2 main-layer.While the conversion efficiency of the main-layer(A90R10) is slightly improved from 7.066 % to 7.738 %, 8.445 % and 7.373 % when QF-Ti-1125F, QF-Ti-1125G and Flower-like TiO2 particulate overlayers are introduced.

並列關鍵字

Titanium Dioxide ； Anatase ； Rutile ； Nanoparticle ； Nanorod ； Mix-phase ； Dye-sensitzed solar cell

參考文獻

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