鈮摻雜二氧化鈦奈米管陣列應用於染料敏化太陽能電池之研究

Nb-doped Titanium(iv) Oxide with Nanotube Arrays for Dye-sensitized Solar Cells

洪國晉(Hung Guo-Jin)

指導教授 ： 郭金國

國立臺灣師範大學/科技與工程學院/工業教育學系/碩士(2017年)

https://doi.org/10.6345/NTNU202202011

摘要

研究指出，過渡金屬鈮摻雜二氧化鈦能有效提升材料之導電特性，因而在導電元件、染料敏化太陽能電池領域皆有所研究。本研究配置含鈮溶液，將其塗佈在非晶相之陽極處理二氧化鈦(Anodic Titanium(iv) Oxide, ATO)所生長之二氧化鈦(Titanium(iv) Oxide, TiO2)形成陣列式奈米管孔洞。經熱處理之後形成銳鈦礦相結構之染料敏化太陽能電池光電極，並且改變鈮摻雜之濃度，得到以5、10、15、20 μl / cm2之濃度摻雜之含鈮二氧化鈦奈米管薄膜光電極，並搭配染料光敏化劑(N719)、氧化還原對之電解質(I- / I3-)，以及鍍Pt之對電極，將其四部份組成為染料敏化太陽能電池。
本實驗探討使用不同濃度鈮摻雜之二氧化鈦奈米管薄膜作為光電極所應用的染料敏化太陽能電池對於效率之影響，探討不同製程參數所形成的含鈮二氧化鈦奈米管薄膜之表面形貌與晶體結構，其性質分析以掃瞄式電子顯微鏡(Scanning Electron Microscopy, SEM)、X光繞射分析儀(X-ray diffractometer, XRD)檢測，並以UV-Vis確認光電極的染料吸附情形。製作完成之染料敏化太陽能電池元件其性質分析以I-V curve與IPCE檢測元件之光電轉換效率以及對不同光波波段反應程度等性質。實驗結果顯示摻雜鈮之二氧化鈦奈米管薄膜比未摻雜所量測到的效率更高，然而並非濃度越高效率越好，其中以塗佈為5 μl / cm2時所製備出的元件效率提升最高，可達到49%的效率提升。

關鍵字

二氧化鈦 ； 奈米管陣列 ； 陽極處理法 ； 染料敏化太陽能電池 ； 鈮摻雜

並列摘要

According to the research, doping niobium to titanium dioxide can effectively enhance the conductive properties. It is used to study conductive elements and dye-sensitized solar cells (DSSC). This study prepared niobium-containing solution and placed it on amorphous Anodic Titanium(iv) Oxide (ATO). After heat treatment, ATO formed anatase phase structure, which can be used for the photoelectrode of DSSC. Trying to change the concentration of niobium doping by different parameters with 5~20 μl/cm2 niobium-containing solution. Finally, composing the DSSC with the finished product of the photoelectrode, dye sensitizer (N719), the redox couple of electrolytes (I-/I3-), and the electrode (Pt-plated FTO).
This study is trying to discuss the affected efficiency by using different concentrations of niobium doped ATO film as the photoelectrode. To discuss the surface morphology and crystal structure of niobium doped ATO film formed by different process parameters. Among them, analyzing the properties by Scanning Electron Microscopy (SEM) and X-ray diffractometer (XRD). As the experiment progressed, UV-Vis was used to confirm the dye adsorption of the photoelectrode. Analyzing the DSSC's efficiency, Jsc, Voc, and F.F. by I-V curve. Analyzing the photoelectric conversion efficiency by IPCE. The experimental results show that the niobium doped DSSC is more efficiet, the parameter 5 μl/cm2 has the highest efficiency increased 49%.

並列關鍵字

Titanium(iv) Oxide ； nanotube arrays ； ATO ； DSSC ； Nb-doped

參考文獻

[1] U.S. Energy Information Administration, International Energy Outlook 2016, USA, pp. 1-6, May 2016.

[2] Gevorkian, P., Sustainable Energy System Engineering: The Complete Green Building Design Resource., New York, 2007.

[3] Tsokos, K. A., Physics for the IB Diploma Full Colour., Cambridge, 1998.

[4] 吳育任，“淺談太陽能電池的原理與應用”，臺大電機系科普系列，2014年4月號，pp.1-7，2014年。

[5] L. Kazmerski, Best Research-Cell Efficiencies, USA, 2016.