有機太陽能電池用P型新穎共軛高分子材料之合成與分析

Abstract

本國合計畫預期合成與分析新穎低能隙P-型共軛高分子材料並與加州大學洛杉磯分校所合成之新穎富勒烯衍生物滲合後形成異質接面太陽能電池之主動層。並以同步輻射光源以掠角方式進行小角與廣角X-光散射及三維穿透式電子顯微鏡進行主動層之形態分析而加洲大學將進行太陽能電池元件之光電分析及物理性質之特性。本計畫第一年為合成低能隙(介於1.2至1.8電子伏特)主鏈型施體-受體共軛高分子並與富勒烯衍生物(PCBM, PC71BM, ICBA)等滲合製成光伏元件。 預期第一年結束後元件光電轉換效率可達7％。第二年為合成低能隙之主鏈型施體側接交聯基-受體共軛高分子並與加州大學所合成之新穎富勒烯衍生物滲合以加熱或照光方式產生具交聯性之光伏元件之主動層，預期第二年結束後元件效率可達8％。第三年為合成低能隙之主鏈型施-雙受體側接交聯基之共軛高分子與加州大學所合成之新穎富勒烯衍生物滲合後製成光伏元件，預期第三年結束後元件效率可達10％。

The goals of this project are (i) to synthesize and to analyze low bandgap p-type conjugated polymers (ii) to blend the synthesized conjugated polymers with the newly synthesized fullerenes that will be carried out by University of California Los Angles (UCLA) for forming active layers and (iii) to probe the active layer morphology with synchrotron grazing-incidence small/wide angle X-ray scattering and three-dimensional transmission electron microscopy in bulk hetero-junction photovoltaics. The first year’s work includes syntheses of low bandgap (1.2 to 1.8eV) main-chain donor-acceptor conjugated polymers and blending with PCBM, PC71BM and ICBA for forming organic photovoltaics with power conversion efficiency reaching 7% along with morphology characterization. The second year’s work consists of syntheses of low bandgap main-chain donor-acceptor conjugated polymers with cross-linkable group attached the side of the donor units and blending with the newly synthesized fullerenes by UCLA and exposing the active layer to heat or light to promote the cross-linking of the conjugated polymer in the active layer, with devices’ power conversion reaching 8% and carrying out morphology characterization. The third year’s work comprises syntheses of low bandgap main-chain donor-acceptor1-g-acceptor2 conjugated polymers with cross-linkable group attached the side of the acceptor2 units and blending with the newly synthesized fullerenes by UCLA and exposing the active layer to heat or light to promote the cross-linking of the conjugated polymer in the active layer, with devices’ power conversion reaching 10% and carrying out morphology characterization.