Milan Riccardo, Singh Selopal Gurpreet, Cavazzini Marco, Orlandi Simonetta, Boaretto Rita, Caramori Stefano, Concina Isabella, Pozzi Gianluca
Department of Information Engineering, University of Brescia, Via Valotti, 9 - 25131, Brescia, Italy.
CNR-INO SENSOR Laboratory, via Branze, 45 - 25123, Brescia, Italy.
Sci Rep. 2020 Jan 24;10(1):1176. doi: 10.1038/s41598-020-58310-1.
SnO nanoparticles have been synthesized and used as electron transport material (ETM) in dye sensitized solar cells (DSSCs), featuring two peripherally substituted push-pull zinc phthalocyanines (ZnPcs) bearing electron donating diphenylamine substituents and carboxylic acid anchoring groups as light harvesters. These complexes were designed on the base of previous computational studies suggesting that the integration of secondary amines as donor groups in the structure of unsymmetrical ZnPcs might enhance photovoltaics performances of DSSCs. In the case of TiO-based devices, this hypothesis has been recently questioned by experimental results. Herein we show that the same holds for SnO, despite the optimal matching of the optoelectronic characteristics of the synthesized nanoparticles and diphenylamino-substituted ZnPcs, thus confirming that other parameters heavily affect the solar cells performances and should be carefully taken into account when designing materials for photovoltaic applications.
氧化锡纳米颗粒已被合成并用作染料敏化太阳能电池（DSSC）中的电子传输材料（ETM），其具有两个带有供电子二苯胺取代基和羧酸锚定基团的周边取代的推拉式锌酞菁（ZnPc）作为光捕获剂。这些配合物是基于先前的计算研究设计的，该研究表明在不对称ZnPc结构中引入仲胺作为供体基团可能会提高DSSC的光伏性能。在基于二氧化钛的器件中，这一假设最近受到了实验结果的质疑。在此我们表明，对于氧化锡也是如此，尽管合成的纳米颗粒和二苯胺基取代的ZnPc的光电特性实现了最佳匹配，从而证实其他参数会严重影响太阳能电池的性能，并且在设计用于光伏应用的材料时应仔细考虑这些参数。
