臺灣博碩士論文加值系統

本論文是使用溶液製程的方式，配合台大化學系汪根欉老師實驗團隊提供可以分別當作電子貢獻者以及電子接收者的有機小分子材料，探討正規結構下太陽能電池元件特性。
將有機小分子FTT與CTT分別當作電子貢獻者並搭配PCBM的情況下，光電轉換效率分別為2.23%和1.00% ; 然而FTT當作電子接收者並搭配P3HT的情況下，其光電轉換效率亦可以有0.69%，CTT則無效率。由薄膜的吸收光譜得知，FTT:PCBM 與 CTT:PCBM在CF溶劑中擁有相近的吸收度，但是，由外部量子效率可知FTT:PCBM 在所形成的主動層，其元件之光子轉換成電子的整體效率較CTT:PCBM來的好。並且，在原子力顯微影像當中，可以得知由FTT:PCBM的主動層相較於CTT:PCBM，有較低的表面粗糙度，所以可知FTT小分子搭配PCBM在CF溶劑下的溶解度較CTT佳，使得所形成的主動層表面輪廓較為平坦，進而影響主動層與電極之間的電荷傳遞特性，元件效率因此提升。

This thesis is to investigate the device properties of the organic small molecule used as the electron donor/acceptor materials, respectively, in solution process. The small molecules are provided by Prof. Ken-Tsung Wong in the department of chemistry in NTU.
The device efficiencies utilized the active layer of FTT:PCBM and CTT:PCBM are 2.23 % and 1.00 %, respectively. However, the device efficiency can still reach 0.69% with the active layer of P3HT:FTT. From the absorption spectra, both of the active layers (FTT:PCBM and CTT:PCBM) have the similar curves. But, for the measurement of external quantum efficiency (the efficiency of photons converted into electrons), the device with FTT:PCBM have better performance. Moreover, based on the AFM images,the morphology of the active layer consist of FTT:PCBM has the lower values of roughness compared to that of CTT:PCBM. This indicates the solubility of FTT:PCBM is better than that of CTT with the solvent of chloroform (CF), leading the smoother morphology of the active layer, improved the property of carrier transport ,and enhance the device performance.

致謝
Abstract
摘要
圖目錄
第一章 緒論
1.1前言
1.2太陽能背景
1.2.1太陽光譜(Solar Spectrum)
1.2.2太陽能電池種類介紹
1.3 研究動機
第二章 理論基礎與文獻回顧
2.1太陽能電池特性分析
2.1.1太陽能電池六大參數
2.1.2太陽能電池等效電路圖
2.2有機太陽能電池結構
2.2.1單層結構
2.2.2電子施體/受體雙層異質接面結構
2.2.3混合型異質接面結構太陽能電池
2.3有機太陽能電池工作原理
第三章 實驗流程與設備
3.1實驗材料介紹
3.1.1 ITO導電玻璃
3.1.2導電高分子PEDOT:PSS
3.1.3有機主動層材料
3.1.4實驗材料能階
3.1.5溶劑介紹
3.2實驗流程
3.2.1 ITO玻璃基板製備
3.2.2 ITO玻璃基板清潔
3.2.3電洞傳輸層塗佈
3.2.4主動層塗佈
3.2.5前退火製程
3.2.6陰極真空蒸鍍
3.3實驗儀器
3.3.1超音波震洗機
3.3.2紫外光臭氧清洗機(UV-Ozone)
3.3.3加熱攪拌器(Hot Plate)
3.3.4旋轉塗佈機
3.3.5手套箱(Glove Box)
3.3.6熱蒸鍍機(Thermal Evaporation)
3.3.7 I-V曲線量測系統(I-V curve measurement system)
3.3.8 EQE量測系統
3.3.9 AFM原子力顯微鏡(Atomic Force Microscope)
第四章 結果與討論
4.1 小分子材料混合PCBM
4.1.1測試各溶劑溶解情形
4.1.2太陽能電池量測分析
4.2 小分子材料混合P3HT
4.2.1測試各溶劑溶解情形
4.2.2太陽能電池量測分析
第五章 結論
參考文獻

[1] Wikipedia, http://en.wikipedia.org/wiki/File:Solar_Spectrum.png

[2] Newport, Introduction to Solar Radiation, http://www.newport.com Introduction-to-Solar-Radiation/411919/1033/content.aspx

[3] S. Chaberek, R. J. Allen, and G. Goldberg “Dye-Sensitized Photopolymerization Processes. The Photoreducing Activity of some Dicarbonyl Compound”, J. Phys. Chem. 69(1965)2834

[4] B. O. Regan, M. Gratzel “A Low-cost, High-Efficiency Solar Cell based Dye-Sensitized Colloidal TiO2 Films”, Nature 353(1991)737

[5] Julian Burschka, Norman Pellet, Soo-Jin Moon, Robin Humphry-Baker, Peng Gao, Mohammad K. Nazeeruddin, Michael Gratzel“Sequential deposition as a route to high-performance perovskite-sensitized solar cells”Nature 499(2013) 316

[6] H. Kallmann, M. Pope, “Photovoltaic Effect in Organic Crystals”, J. Chem. Phys. 30(1958 )585.

[7] C. W. Tang, “Two Layer Organic Photovoltaic Cell”.Appl. Phy. Lett. 48(1986)183

[8] J. J. M. Halls, K. Pichler, and R. H. Friend, “Exciton Diffusion and Dissociation in a Poly(p-phenylenevinylene)/C60 Heterojunction Photovoltaic Cell”,Appl. Phys. Lett. 68(1996)3120

[9] P. Peumans and S. R. Forrest, “Very-High-Efficiency Double-Hetero Structure Copper Phthalocyanine/C60 Photovoltaic Cells”,Appl. Phys. Lett. 79(2001)126

[10] N. S. Sariciftci, L. Smilowitz, A. J. Heeger, F. Wudl, “Photoinduced Electron Transfer from a Conducting Polymer to Buckminster fullerene” Science 258(1992) 1474


[11] N. S. Sariciftci, D. Braun, C. Zhang, V. I. Srdanov, A. J. Heeger, G. Stucky, F. Wudl, “Semiconducting Polymer-Buckminster Fullerene Heterojunctions:Diodes, Photodiodes, and Photovoltaic Cells”, Appl. Phys. Lett. 62(1993)585

[12] G. Yu, J. Gao, J. C. Hummelen, F. Wudl, and A. J. Hegger, “Polymer Photovoltaic Cells:Enhanced Efficiencies via a Network of Internal Donor-Acceptor Heterojunctions” , Science270(1995)1789

[13] S. E. Shaheen, C. J. Brabec, N. S. Sariciftci, F. Padinger, T. Fromherz, and J. C. Hummelen, “2.5% Efficient Organic Plastic Solar Cell”, Appl. Phys. Lett. 78(2001)841

[14] F. Padinger, R. S. Rittberger and N. S. Sariciftci, “Effects of Postpro duction Treatment on Plastic Solar Cells” ,Adv. Funct. Mater. 13(2003)85

[15] G. Li, V. Shrotriya, Y. Yao, and Y. Yang, “Investigation of Annealing Effects and Film Thickness Dependence of polymer Solar Cells based on Poly(3-hexylthiophene) ”, J. Appl. Phys. 98(2005)043704

[16] G. Li, V. Shrotriya, J. S. Huang, Y. Yao, T. Moriarty, K. Emery, Y. Yang, “High-Efficiency Solution Processable Polymer Photovoltaic Cells by Self-organization of Polymer Blends ”, Nat. Mater. 4(2005)864

[17] L. J. A. Koster, V. D. Mihailetchi, and P. W. M. Blom, “Ultimate Efficiency of Polymer/Fullerene Bulkheterojunction Solar Cells”, Appl. Phys. Lett. 88(2006)093511-1

[18] C. M. Scharber, D. Muhlbacher, M. Koppe, P. Denk, C. Waldauf, A. J. Heeger, and J. C. Brabec, “Design Rules for Donors in Bulk-Heterojunction Solar Cells-Towards 10% Energy-Conversion Efficiency”, Adv. Mater. 18(2006)789

[19] P. Peumans, A. Yakimov, and S. R. Forrest, “Small Molecular Weight Organicthin-Film Photodetectors and Solar Cells”, J. Appl. Phys. 93(2003)3693
[20] H. Hoppea and N. S. Sariciftci, J. Mater. Res. 19(2004)1924

[21] H. Choi, B. Kim, Y. J. Ko, D. Lee, H. Kim, S. H. Kim, K. Kim, “Solution Processed WO3 layer for the replacement of PEDOT:PSS layerin organic photovoltaic cells”, Organic Electronics 13(2012)959-968

[22] J. S. Moon, J. Jo, A. J. Heeger. “Nanomorphology of PCDTBT:PC70BM Bulk Heterojunction Solar” Adv. Eng. Mater. 2(2012)304

[23] Y. S. Kim, Y. Lee, J. K. Kim, E. O. Seo, E. W. Lee, W. Lee, S. H. Han, S. H. Lee, “Effect of solvents on the performance and morphology of polymer photovoltaic devices”, Current Applied Physics 10(2010)985-989