- 學位論文
花青素染料敏化太陽能電池的最佳化
Optimization of dye-sensitized solar cell fabricated with anthocyanin
若您是本文的作者，可授權文章由華藝線上圖書館中協助推廣。
摘要
敏化劑是染料敏化太陽能電池(DSSC)用來捕獲光的天線，是影響電池效率最為重要的一個元件。目前世界上用於染料敏化太陽能電池的幾種主流敏化劑，如釕基敏化劑等N3染料是具有毒性而且極為昂貴的，所以現階段的主要目標就是尋找一個乾淨無毒且便宜的敏化劑並將其效率最佳化。 花青素是一種天然的植物色素，在自然界中存量相當豐富。本研究利用紫高麗菜(Brassica oleracea var. capitata f.rubra)萃取出的花青素作為染料敏化太陽能電池的敏化劑，並嘗試各種不同的組裝與工作條件以追求電池效率的最佳化。另外也測試了數種共吸附劑如膽酸衍生物與脂肪酸等，都具有明顯提升染料敏化太陽能電池效率的效果。在半封裝的組態下，染料敏化太陽能電池的平均效率約為1%，而最高效率可以達到1.4％。天然花青素不具有毒性而且成本低廉，因此有可能在未來成為一個敏化劑的選擇。
並列摘要
Sensitizer is used as an antenna to capture light in dye sensitized solar cell (DSSC). It is the most important element in affecting the efficiency of DSSC. The present used photosensitizer like ruthenium dye complexes are toxic and expensive, so finding a clean, cheap and efficient photosensitizer is highly desirable. Anthocyanin (ACN) is a natural pigment from plants, existing in huge amount. In this study, the ACN extracted from red cabbage (Brassica oleracea var. capitata f.rubra) was used as photosensitizer and various assembly and working conditions were tested to characterize and optimize the anthocyanin-based solar cell. The effects of several coadsorbents including deoxycholic acid (DCA) and fatty acids were studied and their addition was shown to significantly increase the efficiency. Under our experimental conditions, the average efficiency was around 1%, and the best was 1.4%. On account of its variable color, safety, low cost, and accessibility, natural ACN has the potential to become a new choice of photosensitizer in the future.
參考文獻
[1] Brian O'Regan, Michael Grätzel "A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films". Nature 353 (6346): 737–740, (1991).
[2] Hamann, W.T, Jensen, A.R, Martinson, A, Ryswykac, H and Hupp, J. "Advancing beyond current generation dye-sensitized solar cells". Energy Environ. Sci. 1: 66–78, (2008).
[4] Tiwari, A and Snure, M. "Synthesis and characterization of ZnO nano-plant-like electrodes". J Nanosci Nanotechnol 8 (8): 3981–7, (2008).
[6] Gao, F; Wang, Y; Zhang, J; Shi, D; Wang, M; Humphry-Baker, R; Wang, P; Zakeeruddin, Sm; Grätzel, M. "A new heteroleptic ruthenium sensitizer enhances the absorptivity of mesoporous titania film for a high efficiency dye-sensitized solar cell". Chemical communications (23): 2635–7, (2008).
[7] Yella, A; Lee, HW; Tsao, HN; Yi, C; Chandiran, AK; Nazeeruddin, MK; Diau, EW-D; Yeh, C-Y; Zakeeruddin, SM; Grätzel, M. "Porphyrin-Sensitized Solar Cells with Cobalt (II/III)–Based Redox Electrolyte Exceed 12 Percent Efficiency". Science 334 (6056): 629–634, (2011).