臺灣博碩士論文加值系統

本研究是以刮刀塗佈法來製備染料敏化太陽能電池（DSSCs），並在原始的二氧化鈦中摻雜黑磷（Black Phosphorus, BP），以及在電解液中摻雜石墨烯（Graphene, G）。經J-V結果表明，摻雜黑磷以及石墨烯均能有效的提高DSSCs的短路電流密度（Jsc）、光電轉換效率（Ƞ）。Jsc從原本未摻雜之10.52（mA/cm2），經由摻雜BP和G分別提升至11.70、12.08（mA/cm2），光電轉換效率從原始未摻雜之4.60%，經由摻雜BP和G分別提升至5.22、5.32（%）。電化學交流阻抗普（Electrochemical Impedance Spectroscopy, EIS）測量結果表明，摻雜黑磷能有效的降低內部的結構阻抗（Rk），Rk從原本未摻雜之14.367（Ω），經由摻雜降低至13.887（Ω）。石墨烯電解液能有效的降低DSSCs電解液內部擴散傳輸阻抗（RD），RD從原本未摻雜之9.559（Ω），經由摻雜降低至7.632（Ω）。最後將探討共摻雜BP、G對於DSSCs的影響，共同摻雜之Jsc為10.84（mA/cm2），光電轉換效率為4.81（%），比單一摻雜時低，內部結構阻抗（Rk）為17.665（Ω），電解液內部擴散傳輸阻抗（RD）為9.037（Ω），皆比單一摻雜時要來的高。綜合以上結果表明，單一摻雜BP、G時效率都有比較好的表現，單一摻雜BP時，Jse值為最高，Rk值最低，並證明染料敏化太陽能電池之光陽極摻雜單層BP，能有效改善光生電子於薄膜內部傳遞，二氧化鈦藉由BP捕捉其電子，電子-電洞複合率降低，使光生電子快速傳遞至外部電路，改善DSSCs之效率。單一摻雜石墨烯時，光電轉換效率（Ƞ）有最好的表現，RD值為最低，證明電解液中摻雜石墨烯能有效的下降電解液內部的阻抗，最終改善了DSSCs效率。

In this study, dye-sensitized solar cells (DSSCs) were prepared by the doctor blade coating method, and the original titanium dioxide was doped with black phosphorus (Black Phosphorus, BP), and the electrolyte was doped with graphene (Graphene, G). The J-V results show that both black phosphorus doping and graphene can effectively improve the short-circuit current density (Jsc) and photoelectric conversion efficiency (Ƞ) of DSSCs.Jsc increased from 10.52 (mA/cm2) originally undoped to 11.70 and 12.08 (mA/cm2) through doping BP and G, respectively. The photoelectric conversion efficiency was increased from 4.60% of the original undoped, through doping BP and G. Increase to 5.22, 5.32 (%) respectively. Electrochemical Impedance Spectroscopy (EIS) measurement results show that doping with black phosphorus can effectively reduce the internal structural impedance (Rk). Rk is reduced from 14.367 (Ω), which was originally undoped, to 13.887 through doping. (Ω). Graphene electrolyte can effectively reduce the internal diffusion transmission resistance (RD) of DSSCs electrolyte.The RD is reduced from the original undoped 9.559 (Ω) to 7.632 (Ω) through doping. Finally, the influence of co-doping BP and G on DSSCs will be discussed.The Jsc of co-doping is 10.84 (mA/cm2), the photoelectric conversion efficiency is 4.81 (%), which is lower than that of single doping, and the internal structure resistance (Rk) is 17.665 (Ω), the internal diffusion transmission resistance (RD) of the electrolyte is 9.037 (Ω), which is higher than that of single doping. The above results show that the efficiency of single-doped BP and G has better performance. When single-doped BP, the Jse value is the highest and the Rk value is the lowest. It also proves that the photoanode doped single-layer BP of the dye-sensitized solar cell , It can effectively improve the transmission of photogenerated electrons in the film. Titanium dioxide captures its electrons by BP, and the electron-hole recombination rate is reduced, so that the photogenerated electrons can be quickly transferred to the external circuit and improve the efficiency of DSSCs. When single doped graphene, the photoelectric conversion efficiency (Ƞ) has the best performance, and the RD value is the lowest, which proves that doping graphene in the electrolyte can effectively reduce the internal impedance of the electrolyte and ultimately improve the efficiency of DSSCs.

摘要......i
Abstract......ii
誌謝......iv
目錄......v
表目錄......vii
圖目錄......viii
第一章 序論......1
1.1前言......1
1.2 研究動機......2
第二章 理論與文獻探討......4
2.1 太陽能電池簡介......4
2.1.1太陽光譜特性......4
2.1.2太陽能電池原理......6
2.2 太陽能電池種類......7
2.2.1 矽太陽能電池......8
2.2.2 化合物薄膜太陽能電池......8
2.2.3 聚合物多層修飾電極型太陽能電池......9
2.3 染料敏化太陽能電池......10
2.3.1 染料敏化太陽能發展歷史與近況......10
2.3.2 染料敏化太陽能電池之結構......10
2.3.3 染料敏化太陽能工作原理......11
2.3.4 透明導電薄膜......13
2.3.5光陽極(工作電極) 13
2.3.6染料(Dye)......14
2.3.7 鉑(Pt)對電極(也稱背電極)......16
2.3.8 電解液......16
2.3.9 塗佈技術......17
2.4 二氧化鈦基本性質......19
2.4.1 二氧化鈦介紹......19
2.4.2 二氧化鈦基本結構......19
2.5石墨烯......22
2.5.1石墨烯介紹......22
2.4.2石墨烯的電子結構......22
2.6黑磷......23
2.6.1黑磷介紹......23
第三章 實驗步驟與設備......25
3.1實驗藥品與儀器設備......25
3.1.1 實驗藥品......25
3.1.2 實驗儀器設備......26
3.2染料敏化太陽能電池之製備......27
3.2.1實驗流程......27
3.2.2 基板清洗......28
3.2.3 製備二氧化鈦醬料......28
3.2.4 製備光陽極薄膜......28
3.2.5對電極製作......28
3.2.6染料製備與浸泡......28
3.2.7電解液之製備......29
3.2.8元件封裝......29
3.3分析儀器應用原理......31
3.3.1元素分析儀(Field Emission Scanning Electron Microscope，FE-SEM)......31
3.3.2場發射掃描式電子顯微鏡分析(Field Emission Scanning Electron Microscope，FE-SEM)......31
3.3.3穿透式電子顯微鏡(Transmission Electron Microscope , TEM)......32
3.3.4紫外光極可見光分光光譜儀(UV-vis Spectrophptpmeter)......33
3.3.5染料敏化太陽能電池之光電轉換效率......34
3.3.6電化學交流阻抗分析儀(Electrochemical Impedance Spectroscopy, EIS)......36
3.3.7入射光電轉換效率測量儀(Incident Photon Conversion Efficiency, IPCE)......40
第四章 結果與討論......42
4.1場發射掃描式電子顯微鏡(FE-SEM)分析......42
4.1.1二氧化鈦摻雜黑磷SEM分析......42
4.2染料敏化太陽能電池特性之分析......50
4.2.1紫外光-可見光分光光譜（UV-vis）之分析......50
4.2.2光電轉換效率(J-V)之分析......51
4.2.3電化學交流阻抗譜(EIS)之分析......54
第五章 結論......58
參考文獻......59
Extended Abstract......64

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