New pyran-based molecules as both n- and p-type sensitizers in semi-transparent Dye Sensitized Solar Cells
作者:Matteo Bonomo、Antonio Carella、Fabio Borbone、Luisa Rosato、Danilo Dini、Lorenzo Gontrani
DOI:10.1016/j.dyepig.2019.108140
日期:2020.4
efficiency significantly increases for all the dyes sensitized devices, up to a maximum of 2.1%. The dyes were successfully employed the as photosensitizers in p-type DSSC, obtaining PCEs approaching 0.1%, a promising result in the field on NiO-based devices. More remarkably, as far as we are aware, this is the first paper in which a single series of dyes is effectively employed as sensitizers in both
我们在这里报告了四种新颖的基于吡喃的DSSC光敏剂的合成。染料由用不同的电子受体基团和外围的氰基丙烯酸基团官能化的吡喃核构成。对分子进行了仔细的表征,以了解其光学和电化学性能,并观察到明显依赖于官能化吡喃核的电子受体基团的强度。详细的染料DFT可以更好地了解电子性能,并与实验性能很好地吻合。该染料在n型和p型DSSC中均用作光敏剂。在第一种情况下,LUMO的稳定性部分阻止了电子注入的快速动力学。为了克服这个问题,我们使用了含过量LiI的I型电解质:所有染料敏化器件的光转换效率均显着提高,最高可达到2.1%。该染料已成功地用作p型DSSC中的光敏剂,获得的PCE接近0.1%,这在基于NiO的器件领域中是一个有希望的结果。更值得注意的是,据我们所知,这是第一篇论文,其中将一系列染料有效地用作n型和p型DSSC中的敏化剂。