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首页> 美国政府科技报告 >Next Generation Highly Conducting Organic Films Using Novel Donor- Acceptor Molecules for Opto-electronic Applications
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Next Generation Highly Conducting Organic Films Using Novel Donor- Acceptor Molecules for Opto-electronic Applications

机译：下一代高导电有机薄膜使用新型供体 - 受体分子用于光电应用

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This effort continues a two-year Director's Research Initiative (DRI) that investigated various polymer and small molecule mixtures that form the charge transfer (CT) complex to enable next generation highly conducting organic films using novel donor-acceptor molecules for opto-electronic applications. In this DRI, we investigated the CT complexes of 3,4:3',4'- bibenzo (b)thiophene (BBT) with tetracyanoquinodimethane (TCNQ) acceptors. Device data confirmed that the donor-acceptor molecular systems lead to systematic modifications of the charge transport. The thin films were fabricated into devices and I-V properties were studied as a function of annealing. The results demonstrate a 5 to 15 times improvement in the charge transport as a function of annealing. The annealing process apparently contributes to the molecular stack and donor-acceptor alignment. In addition, the ARL-08 molecule (developed by the U.S. Army Research Laboratory ARL) in the first-year effort was investigated as an electron transporting layer by doping ARL-08 with a strong electron donating material, low work function metals. The preliminary device data showed interesting characteristics that are being compiled for the patent. In parallel, we investigated ARL's proprietary BBT molecule as a strong donor molecule for CT complexes with TCNQ. The molecular ordering showed a strong molecular stacking that should lead to improved hole transport properties.

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