Synthesis and applications of new triphenylamine dyes with donor–donor–(bridge)–acceptor structure for organic dye-sensitized solar cells
作者:Chun Sakong、Hae Joong Kim、Se Hun Kim、Jin Woong Namgoong、Jong Ho Park、Jang-Hyun Ryu、Boeun Kim、Min Jae Ko、Jae Pil Kim
DOI:10.1039/c2nj40374a
日期:——
Four novel asymmetric triphenylamine dyes configured with donorâdonorâacceptor (DâDâA) and donorâdonorâbridgeâacceptor (DâDâÏâA) structures were synthesized and applied to organic dye-sensitized solar cells. The terminal methoxy group in the donor part and the furane-bridge unit contributed to the wider absorption region and enhanced electron life time, resulting in a higher photocurrent density (Jsc), open-circuit voltage (Voc), and overall conversion efficiency (η). Among the synthesized dyes, the SK2-based DSSC showed the highest conversion efficiency of 5.57% (Jsc = 10.41 mA cmâ2, Voc = 729 mV, and FF = 0.73) caused by the synergetic effect of the methoxy group and the furane-bridge unit.
研究人员合成了四种新型不对称三苯胺染料,并将其应用于有机染料敏化太阳能电池中,这四种染料分别具有给体-单体-受体(DâDâA)和给体-单体-桥-受体(DâDâÏâA)结构。供体部分的末端甲氧基和呋喃桥单元有助于扩大吸收区域和延长电子寿命,从而获得更高的光电流密度(Jsc)、开路电压(Voc)和整体转换效率(δ-)。在合成的染料中,基于 SK2 的 DSSC 显示出最高的转换效率,达到 5.57%(Jsc = 10.41 mA cmâ2, Voc = 729 mV, FF = 0.73),这是甲氧基和呋喃桥单元的协同效应所致。