以飛行時間法分析有機太陽能電池電荷載子遷移率

Measurement of Charge Carrier Mobility in Organic Solar Cells Using Time of Flight Method

李明蕙(Ming Hui Li)

指導教授 ： 白小明

元智大學/電機通訊學院/光電工程研究所/碩士(2009年)

https://doi.org/10.6838/YZU.2009.00230

摘要

由於，有機太陽能電池之光電轉換效率與電荷載子遷移率是息息相關，但是有機分子的載子率低。因此，本論文藉由改變MEH-PPV材料之分子量分佈寬度，來提升電洞載子遷移率。本論文中，以氯苯作為共軛高分子MEH-PPV(poly[2-(2-ethylhexyloxy)-5-methoxy-1,4-phenylene vinylene] ) 為主要的溶劑，以滴液塗佈的方式成膜，利用飛行時間法、光激發螢光光譜儀、螢光激發光譜儀，以及凝膠層析滲透儀，來分析MEH-PPV薄膜之電洞載子遷移率與分子量分佈寬度之改變與差異。經由實驗結果得知，有改變分子量分佈寬度的MEH-PPV材料，其電洞載子遷移率明顯提升，進而提升有機太陽能電池的光電轉換效率。

關鍵字

飛行時間分析法 ； 電動洞子遷移率

並列摘要

Due to photovoltaic conversion efficiency of the organic polymer solar cells is closely related the charge transport mobility. But it’s low carrier mobility in organic polymer. So, in this study would change the poly-disperity in MEH-PPV to improve the hole mobility. We used chlorobenzene to be the dissolving for MEH-PPV and drop-cast fabricate thick films. Measurement the MEH-PPV hole mobility and poly- dispersity by time of flight method, photoluminescence, hotoluminescence excitation, and GPC. Experimental results show, the holes mobility are improved for change the poly-dispersity MEH-PPV. And then, the photovoltaic conversion efficiency of the organic polymer solar cells will be raised.

並列關鍵字

TOF ； Hole Mobility

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