Structure–photovoltaic performance relationships for DSSC sensitizers having heterocyclic and benzene spacers
作者:Bo Hyung Kim、Harold S. Freeman
DOI:10.1039/c2jm33228k
日期:——
Five new sensitizers based on different spacer groups were designed and synthesized in order to facilitate investigation of the effects of heterocyclic spacers on photovoltaic parameters in DSSCs. It was found that generic issues arising from the electronic nature of heterocyclic units affected voltage parameters, with DP-P giving the highest voltage. On the other hand, higher electron transfer yield across a wide range of the solar spectrum played an important role in enhanced current densities. Best performance was achieved by the thiophene based sensitizer DP-T, resulting in an efficiency of 3.5% with Jsc = 8.19 mA cmâ2, Voc = 0.618 V, ff = 0.697.
我们设计并合成了五种基于不同间隔基团的新敏化剂,以便于研究杂环间隔基团对 DSSC 光电参数的影响。研究发现,杂环单元的电子性质所产生的一般问题会影响电压参数,其中 DP-P 产生的电压最高。另一方面,在较宽的太阳光谱范围内,较高的电子转移产率在提高电流密度方面发挥了重要作用。基于噻吩的敏化剂 DP-T 性能最佳,效率为 3.5%,Jsc = 8.19 mA cmâ2, Voc = 0.618 V, ff = 0.697。