利用轉印製程製備高效率電子元件之研究

郭宗憲

doi:10.6342/NTU.2011.02580

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利用轉印製程製備高效率電子元件之研究

Achieving Efficient Organic Optoelectronics via Stamping Technique

郭宗憲 , Masters　　Advisor：何國川　　

繁體中文 DOI： 10.6342/NTU.2011.02580

有機發光二極體；富勒烯；多層結構；轉印製程；太陽能電池； fullerene ； heterojunction ； light emitting diode ； polymer ； stamping process.

Abstract │ Reference (58) │ Altmetrics

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Solid type polymer solar cells (PSCs) have been extensively studied in this decade, although the efficiency is still lower than 5~6%. Its low fabrication cost, easy processing, and flexible property make it attractive to researchers. The PSCs and polymer light emitting diodes (PLEDs) were demonstrated by incorporating multilayer structure through solution process. In order to prevent the dissolution of the bottom layer by the subsequent process, we use a poly(di-methyl-silane) stamp to transfer the active layer onto the target surface. We introduced the strategical multilayer structure by using our previous developed stamping technique. In order to minimize the unfavorable contact between organics and electrodes for bulk heterojunction (BHJ) solar cells while not losing much the donor and acceptor junctions, we studied the bilayer structure which consists of different fraction of poly(3-hexylthiophene) (P3HT)/ [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) blend layers. Furthermore, in order to balance carrier transport for PLEDs, we also studied the bilayer structure which consists of a bule-polyfluorene as light emitting layer (LEL) and poly(9,9-di-n-octylﬂuorene-alt-(1,4-phenylene-((4-sec-butylphenyl) imino-1,4 -phenylene)) (TFB) as a electron-blocking layer (EBL).
We found that the efficiency of devices was readily manipulated by changing the constitution of each stacking layer. After optimizing the fabrication conditions for each functional layer, we obtained PSCs reaching a power conversion efficiency of 3.52%. The efficiency of PLEDs incorporating an EBL was 27% greater (reaching 4.7 cd A–1) than that prepared without an EBL layer.

Reference ( 58 ) 〈TOP〉

[1] H. J. Park, M. G. Kang, S. H. Ahn, and L. J. Guo “A Facile Route to Polymer Solar Cells with Optimum Morphology Readily Applicable to a Roll-to-Roll Process without Sacriﬁcing High Device Performance” Adv. Mater. 2010, 22, E247.
連結：
[2] W. Cai, X. Gongn and Y. Cao, “Polymer solar cells: Recent development and possible routes for improvement in the performance”, Solar Energy Materials & Solar Cells 2010, 94, 114.
連結：
[3] 秦興國, “二氧化鈦奈米粒子摻混於有機感光層以提升高分子/富勒烯單層異質接面太陽能電池之光電轉換效率”, pp. 4-8, 國立成功大學, 臺南 (2006).
連結：
[4] 黃中奕, “染料敏化及以施受體發光團為染料之太陽能電池研究”, pp. 3-7, 國立臺灣大學, 臺北 (2005).
連結：
[5] B. O’Regan and M. Gratzel, “A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films,” Nature, 353, 737 (1991).
連結：

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