新型含三苯胺染料之合成及其於染料敏化太陽能電池之應用

Synthesis and Application of Triphenylamine-Base Dyes for Dye-Sensitized Solar Cells

陳政豪(Cheng-Hao Chen)

指導教授 ： 汪昆立

國立臺北科技大學/工程學院/化學工程研究所/碩士(2010年)

https://doi.org/10.6841/NTUT.2010.00111

摘要

本篇論文中討論具有D (電子予體) -π(共軛架橋)-A (電子受體)之染料系統，藉由三苯胺末端推拉電子的改變，來調控電子予體的能力，及其能階與光電性能的影響。本論文合成兩種不同染料結構，以氰乙酸(cyanoacetic acid)為拉電子基並可與二氧化鈦(TiO2) 錨合，苯環為π-共軛架橋，而在三苯胺推電子基上分別含有雙硝基染料(TPAR1)，雙甲基醚染料(TPAR2) ，並以FT-IR、H-NMR、MS-ESI鑑定其結構。TPAR1及TPAR2，在四氫氟喃溶劑中的UV-Vis吸收範圍分別為260至600 nm之間，此吸收波長為適用於做染料敏化太陽能電池所需的可見光區段波長；染料TPAR1次大吸收波峰在306 nm、最大吸收波峰在383 nm，其相對應莫耳吸收係數(ε)分別為0.67×104 M-1cm-1及1.54×104 M-1cm-1。而染料TPAR2次大吸收波峰在305 nm、最大吸收波峰在436 nm，其相對應莫耳吸收係數(ε)分別為2.90×104 M-1cm-1及2.49×104 M-1cm-1。其螢光光譜(PL)顯示，TPAR1最大螢光放射峰在547 nm，TPAR2最大螢光放射峰在553 nm。用循環伏安儀(CV)測出的HOMO進而推算LUMO分別為-6.32 eV、-3.58 eV 以及-5.89 eV、-3.44 eV。在AM 1.5模擬太陽光(100 mW/cm2)照射下，TPAR1以及TPAR2最大轉換效率值為0.11 %及1.69 %。最後與文獻中三苯胺推電子基上不含任何官能基之模組染料(TPAR0)比較與討論其光學、電化學性質及染料敏化太陽能電池效能。

關鍵字

D (電子予體) -π(共軛架橋)-A (電子受體)三苯胺 ； 染料敏化太陽能電池 ； 染料

並列摘要

In this thesis, we describes the effects of donating ability in D(donor)-π(bridge)-A(acceptor) structured organic dye on the HOMO and LUMO energy levels and photovoltaic performances in dye-sensitized solar cells. Two different dyes were synthesized using the cyanoacetic acid as an acceptor, which can be anchored onto the surface of TiO2 in a photovoltaic device, and the phenyl as a π-conjugated bridge, while the triphenylamine donor contains a dinitro group (TPAR1) or a dimethoxy group (TPAR2). The new dyes were synthesized and characterized by FT-IR, 1H-NMR, MS-ESI. The two TPA-Based compounds, TPAR1 and TPAR2 exhibited UV-Vis absorption bands around 260 to 600 nm in THF solution. TPAR1 has two absorption peaks were 306 nm and 383 nm corresponding absorption coefficient (ε) were 0.67×104 and 1.54×104 M-1cm-1, respectively. TPAR2 has two absorption peaks were 305 nm and 436 nm corresponding absorption coefficient (ε) were 2.90×104 and 2.50×104 M-1cm-1, respectively. The photoluminescence spectra of TPAR1 and TPAR2 shown mixumun emission peaks at 547 nm and 553 nm, respectively. The HOMO and LUMO for these two compounds had been evaluated by cyclic voltammetry (CV) to be -6.32 eV, -3.58 eV and -5.89 eV, -3.44 eV, respectively. The maximum power conversion efficiency (η) of the two compounds reached 0.11 % and 1.69 % under simulated AM 1.5 solar irradiation of 100 mW/cm2. And finally we compared with a similar dye without any groups attached on the triphenylamine donor moiety, model compound (TPAR0) on photochemistry, electrochemistry property and solar cell performance.

並列關鍵字

D(donor)-π(bridge)-A(acceptor) ； Triphenylamine ； Dye-sensitized solar cells (DSSCs) ； Dye

參考文獻

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