Photoinduced Charge Separation in a Ferrocene−Aluminum(III) Porphyrin−Fullerene Supramolecular Triad
作者:Prashanth K. Poddutoori、Atula S. D. Sandanayaka、Taku Hasobe、Osamu Ito、Art van der Est
DOI:10.1021/jp911937d
日期:2010.11.18
Light-induced electron transfer is investigated in a ferrocene−aluminum(III) porphyrin−fullerene supramolecular triad (FcAlPorC60) and the constituent dyads (AlPorC60 and FcAlPorPh). The fullerene unit (C60) is bound axially to the aluminum(III) porphyrin (AlPor) via a benzoate spacer, and ferrocene (Fc) is attached via an amide linkage to one of the four phenyl groups in the meso positions of the
Interfacial modification to improve inverted polymer solar cells
作者:Steven K. Hau、Hin-Lap Yip、Orb Acton、Nam Seob Baek、Hong Ma、Alex K.-Y. Jen
DOI:10.1039/b808004f
日期:——
We report improved device performance of poly(3-hexylthiophene) (P3HT) and [6,6]phenyl C61butyric acid methyl ester (PCBM)-based inverted bulk-heterojunction (BHJ) solar cells through the modified interface of the TiO2/BHJ with a series of carboxylic acid functionalized self-assembled monolayers (SAMs). The SAMs reduce the series resistance and improve the shunt resistance of the cell leading to increased fill factor and photocurrent density. Different aspects of device improvement can be affected depending on the nature of the SAMs. Modification with a C60-SAM shows the largest enhancement leading to a 35% improvement (η = 3.78%) over unmodified inverted devices (η = 2.80%). This SAM serves multiple functions to affect the photoinduced charge transfer at the interface to reduce the recombination of charges, passivation of inorganic surface trap states, improve the exciton dissociation efficiency at the polymer/TiO2 interface as well as a template to influence the overlayer BHJ distribution of phases, morphology and crystallinity leading to better charge selectivity and improved solar cell performance.
我们报告了通过改进的 TiO2/BHJ 界面,改进了基于聚(3-己基噻吩)(P3HT)和 [6,6]苯基 C61 丁酸甲酯(PCBM)的倒置体异质结(BHJ)太阳能电池的器件性能一系列羧酸功能化的自组装单层(SAM)。 SAM 降低了电池的串联电阻并改善了分流电阻,从而提高了填充因子和光电流密度。根据 SAM 的性质,设备改进的不同方面可能会受到影响。使用 C60-SAM 进行的修改显示出最大的增强,比未修改的倒置器件 (η = 2.80%) 提高了 35% (η = 3.78%)。该 SAM 具有多种功能,可影响界面处的光致电荷转移,以减少电荷复合、钝化无机表面陷阱态、提高聚合物/TiO2 界面处的激子解离效率以及影响覆盖层 BHJ 分布的模板相、形态和结晶度的变化导致更好的电荷选择性和改进的太阳能电池性能。
수용성 광전소재 및 그 제조방법
申请人:Konkuk University Industrial Cooperation Corp 건국대학교 산학협력단(220040157648) BRN ▼206-82-07325
公开号:KR101492163B1
公开(公告)日:2015-02-10
본 발명은 수용성 광전소재 및 그 제조방법에 관한 것이다. 상기와 같은 본 발명에 따르면, 수용성 다당류인 풀루란에 포르피린 유도체와 C60플러렌 유도체를 도입함으로써, 용매의 친수성이 증가할수록 포르피린 유도체에서 C60플러렌 유도체로의 전자 이동이 증가되는 효과가 있다. 또한, 본 발명은 수용성 광전소재를 제공함으로써, 플렉시블 디스플레이, 유기발광소자, 유기박막트랜지스터, RFID 또는 유기태양전지 등 유기 일렉트로닉스 시장에서 경쟁력을 갖추고 다양하게 이용될 수 있다.