聚塞吩衍生物於高分子太陽能電池之應用及其奈米複合材料之合成研究與討論

Photovoltaic device based on polythiophene derivatives and synthesis of surfactant-free nanocomposite

賴正軒(Cheng-Hsuan Lai)

指導教授 ： 周必泰

國立臺灣大學/理學院/化學研究所/博士(2010年)

https://doi.org/10.6342/NTU.2010.10011

摘要

利用聚塞吩衍生物之捕捉銅(I)離子特性，將之添加於聚塞吩高分子太陽能電池元件，並改進元件中的電子傳遞能力，而達到增加太陽能電池元件效率之目的。
再進而以聚塞吩衍生物作為表面保護基團，合成與金奈米粒子以及氧化鋅奈米粒子錯合之奈米複合材料，進而得到粒徑集中、分散均勻之奈米複合材料，並觀察此複合材料的特異性電學性質以及光學性質。
利用簡單的化學浴合成，製作出以硒化鎘為主要吸光層的太陽能電池，在實驗中我們不需使用孔洞性金屬氧化物來當作支持層，而直接形成硒化鎘薄膜，元件效率可達2.5%以上。

關鍵字

聚塞吩 ； 高分子太陽能電池 ； 奈米複合材料 ； 量子點 ； 氧化鋅

並列摘要

A new approach to synthesize nanocrystal-polymer nanocomposite is reported, in which 2-(2-ethoxyethoxy)ethoxy modified polythiophene (P3EEET) serves as the protecting group for dispersion and homogeneous size distribution of metal and semiconductor nanoparticles. The roles of the metal ions in the reaction system anchored with the polythiophene analogues have been reported as well. We accordingly propose that there exists a non-covalent, electrostatic (ion-dipole) interaction among Au (III)/Zn (II) ions, oxygen atoms on ether side chains and sulfur atoms of P3EEET. Moreover, this interaction has been proven to restrict the free rotation around the thiophene-thiophene bond. The enhancement in optical and electrical properties of nanocomposites presented herein thus demonstrate the potential of alkyloxyl modified polythiophenes-based nanocomposites in the field of optoelectronics and microelectronics devices.
We demonstrate here a facile, all chemical bath deposition process to prepare CdSe QDs onto FTO. Pre-treatment of TiCl4/NH4F on FTO glasses, forming a FTO/TiO2/F/ CdSe type of cell that is free from mesoporous metal oxide, consistently renders a power conversion efficiency of 2.51%.

並列關鍵字

solar cell ； polythiophene ； nanocomposites ； quantum dots ； zinc oxide

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