State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, Jilin 130012, China.
College of Chemistry, Jilin University, Changchun 130012, China.
J Colloid Interface Sci. 2018 Feb 15;512:1-6. doi: 10.1016/j.jcis.2017.10.007. Epub 2017 Oct 4.
Organic semiconducting materials have attracted significant attention for use in optoelectronic devices, as they can significantly improve device performance. Herein, a donor-acceptor conjugated polymer (poly(isoindigo-thiopheneylbenzothiadiazole, PID-TBT) was synthesized, which has strong and broad absorption in the visible region (400-800nm). The band gap of PID-TBT is 1.65eV. The PID-TBT honeycomb film with a porous structure was easily fabricated by the breath figure method. Compared with the smooth PID-TBT film, the honeycomb film shows significant enhancement in light capture capability and the efficiency of photoelectric conversion. The reflectance of the honeycomb film is reduced by 7% and the photocurrent is tenfold higher than that of the smooth film. Apart from designing new molecules by complex reactions, this work demonstrated that photoelectric conversion can be easily improved by introducing micro or nanostructures into devices.
有机半导体材料因其在光电设备中的应用而受到广泛关注，因为它们可以显著提高设备性能。在此，合成了一种给体-受体共轭聚合物（聚（异吲哚-噻吩基苯并噻二唑，PID-TBT），它在可见光区（400-800nm）具有很强和很宽的吸收。PID-TBT 的带隙为 1.65eV。通过呼吸图法很容易制备出具有多孔结构的 PID-TBT 蜂窝膜。与光滑的 PID-TBT 薄膜相比，蜂窝膜在光捕获能力和光电转换效率方面有显著提高。蜂窝膜的反射率降低了 7%，光电流比光滑膜高十倍。除了通过复杂反应设计新分子外，这项工作还表明，通过将微纳米结构引入器件中，光电转换可以很容易地得到改善。
