探討電洞傳輸層對有機太陽能電池特性之研究

Investigation of Hole Transport Layer for the Properties of Organic Solar Cells

蔡嵇竹(Chi-Chu Tsai)

指導教授 ： 閔庭輝 ； 黃建榮

國立虎尾科技大學/電機資訊學院/光電與材料科技研究所在職專班/碩士(2010年)

https://doi.org/10.6827/NFU.2010.00014

摘要

本研究中的太陽能電池之基本結構為：基板/陽極/主動層/電子傳輸層/陰極。太陽能電池結構中所使用的材料分別為：基板為玻璃、陽極為透明導電氧化銦錫( indium tin oxide ; ITO)、主動層為以共蒸鍍方式混合copper phthalocyanine (CuPc)與buckminsterfullerene (C60)、電子傳輸層為 bathocuproine (BCP)、陰極為鋁(Al)。本研究的重點為陽極與主動層之間使用poly3,4-ethylenedioxythiophene:polystyrenesulfonate (PEDOT:PSS)與copper phthalocyanine (CuPc)電洞傳輸層改善太陽能電池之特性。
本研究發現太陽能電池的短路電流的變化，是不受到塗佈PEDOT:PSS材料時之不同的轉速(從2000~4500 rpm)而影響，使用PEDOT:PSS材料並不能改善太陽能電池的的短路電流。因此為了改善太陽能電池的短路電流特性，將PEDOT:PSS材料中加入適量的甘油(glycerin)為0.7克，可提升PEDOT: PSS材料的導電率，結果發現能增加太陽能電池之短路電流(Jsc)為8.09 mA/cm2。然而卻降低開路電壓(Voc)為0.34 V。為了改善這個開路電壓偏低的缺點，因此本研究於PEDOT:PSS材料上熱蒸鍍一層CuPc，改變CuPc的厚度從2~8 nm。當CuPc的厚度為4 nm時，可提高太陽能電池的開路電壓為0.46 V、短路電流為 8.8 mA/cm2、轉換效率為1.37 %。

關鍵字

有機太陽能電池 ； 電洞傳輸層

並列摘要

The device structure of organic solar cell (OSC) is glass substrate/anode/active layer/cathode in this study. The indium tin oxide (ITO) and aluminum (Al) are used as anode and cathode, respectively. The copper phthalocyanine: buckminsterfullerene (CuPc: C60) and bathocuproine (BCP) were used as active layer and electron transport layer, respectively. In this study, the properties of OSCs are improved by insertion of the hole transport layer as poly3, 4-ethylenedioxythiophene: polystyrenesulfonate (PEDOT: PSS) and CuPc between the anode and active layer.
In this experiment, the PEDOT: PSS is deposited on ITO by the spin coating method. The short current of OSCs is not influenced by the change in the rotational speed of spin coating from 2000~4500 rpm. The short current of OSCs is not improved by using the PEDOT: PSS. In order to improve the short current of OSCs, the glycerin is used to improve conductivity of PEDOT: PSS. When the glycerin is doped into PEDOT: PSS at 0.7 g, the short current of OSCs is increased at 8.8 mA/cm2. Although the short current of OSCs was increased, the open circuit voltage of OSCs was decreased. In order to improve the open circuit voltage of OSCs, the CuPc is inserted between the PEDOT: PSS and active layer. The thickness of CuPc is varied in the range from 2 to 8 nm. When the thickness of CuPc is 4 nm, the open circuit voltage, short current and power conversion efficiency (PCE) of OSCs are 0.46V, 8.8 mA/cm2 and 1.37 %, respectively.

並列關鍵字

Organic solar cells ； Hole transport layer

參考文獻

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