我们报告N,对称方酸菁染料的新衍生物N-二芳基具有高溶解度和高的吸收率(ε= 0.71-4.1×10苯胺取代基5中号-1 厘米-1在红色太阳光谱区域)(λ最大= 645-694 nm)使其成为有机光伏(OPV)应用的有希望的候选者。还制备了非对称的N,N-二异丁基苯胺基和N,N-二苯基苯胺基(二苯基氨基)方胺,相对于它们的对称对应物,它们给出了蓝移的吸收光谱(λmax = 529–535 nm)。与双(N,N-二异丁基苯胺基)方酸相比,对称和不对称的N,N-二芳基苯胺方酸在溶液中的吸收带比N,N-di烷基苯胺方酸的对应物要宽得多:N,N-二芳基苯胺方酸的半峰全宽(fwhm)为1280–1980 cm –1,而N,N-二异丁基苯胺基对苯二酚的fwhm值仅为630 cm –1。N,N-二芳基苯胺类方酸薄膜的吸收带进一步扩大到2500-3300 cm -1。N,N-Di芳基苯胺类方括号是荧光的,
设计并合成了一系列带有N,N-二芳基氨基取代基作为封端基团的新的不对称方酸衍生物,即ASQAr-1-6。与参考化合物相比ASQB轴承Ñ,Ñ -diisobutylamino封端剂中,所有的六个目标化合物表现出改进的热稳定性,红移和扩大吸收带以及较低的HOMO和LUMO能级。尽管大多数化合物的空穴迁移率仍低于ASQB,但是使用ASQAr-1-6固溶处理的异质结小分子有机太阳能电池(BHJ-SMOSC)作为电子供体材料,它们的功率转换效率(PCE,3.08–3.69%)都大大高于基于ASQB的参考器件(PCE = 1.54%)。基于ASQAr-1-6的BHJ -SMOSC的光伏性能大大提高,可以归因于同时提高的开路电压(V oc,0.81-0.87 V vs. 0.75 V),短路电流密度(J sc,8.07–9.06 mA cm -2 与5.40 mA cm -2)和填充因子(FF,0.45-0
N,N-Diarylamino end-capping as a new strategy for simultaneously enhancing open-circuit voltage, short-circuit current density and fill factor in small molecule organic solar cells
bulk-heterojunction small moleculeorganicsolarcells (BHJ-SMOSCs) using ASQAr-1–6 as electron donor materials all show drastically higher power conversion efficiency (PCE, 3.08–3.69%) than that of the ASQB-based reference device (PCE = 1.54%). The much enhanced photovoltaic performance of BHJ-SMOSCs based-on ASQAr-1–6 could be attributed to the simultaneously enhanced open-circuitvoltage (Voc, 0.81–0.87 V
设计并合成了一系列带有N,N-二芳基氨基取代基作为封端基团的新的不对称方酸衍生物,即ASQAr-1-6。与参考化合物相比ASQB轴承Ñ,Ñ -diisobutylamino封端剂中,所有的六个目标化合物表现出改进的热稳定性,红移和扩大吸收带以及较低的HOMO和LUMO能级。尽管大多数化合物的空穴迁移率仍低于ASQB,但是使用ASQAr-1-6固溶处理的异质结小分子有机太阳能电池(BHJ-SMOSC)作为电子供体材料,它们的功率转换效率(PCE,3.08–3.69%)都大大高于基于ASQB的参考器件(PCE = 1.54%)。基于ASQAr-1-6的BHJ -SMOSC的光伏性能大大提高,可以归因于同时提高的开路电压(V oc,0.81-0.87 V vs. 0.75 V),短路电流密度(J sc,8.07–9.06 mA cm -2 与5.40 mA cm -2)和填充因子(FF,0.45-0
N,N-Di<i>aryl</i>anilinosquaraines and Their Application to Organic Photovoltaics
作者:Siyi Wang、Lincoln Hall、Vyacheslav V. Diev、Ralf Haiges、Guodan Wei、Xin Xiao、Peter I. Djurovich、Stephen R. Forrest、Mark E. Thompson
DOI:10.1021/cm2020803
日期:2011.11.8
spectra (λmax = 529–535 nm) relative to their symmetric counterparts. Compared to bis(N,N-diisobutylanilino)squaraine, both symmetrical and unsymmetrical N,N-diarylanilino squaraines show markedly broader absorption bands in solution than their N,N-dialkylanilino squaraine counterparts: the full width at half-maximum (fwhm) for N,N-diarylanilino squaraines range from 1280–1980 cm–1, while the fwhm value
我们报告N,对称方酸菁染料的新衍生物N-二芳基具有高溶解度和高的吸收率(ε= 0.71-4.1×10苯胺取代基5中号-1 厘米-1在红色太阳光谱区域)(λ最大= 645-694 nm)使其成为有机光伏(OPV)应用的有希望的候选者。还制备了非对称的N,N-二异丁基苯胺基和N,N-二苯基苯胺基(二苯基氨基)方胺,相对于它们的对称对应物,它们给出了蓝移的吸收光谱(λmax = 529–535 nm)。与双(N,N-二异丁基苯胺基)方酸相比,对称和不对称的N,N-二芳基苯胺方酸在溶液中的吸收带比N,N-di烷基苯胺方酸的对应物要宽得多:N,N-二芳基苯胺方酸的半峰全宽(fwhm)为1280–1980 cm –1,而N,N-二异丁基苯胺基对苯二酚的fwhm值仅为630 cm –1。N,N-二芳基苯胺类方酸薄膜的吸收带进一步扩大到2500-3300 cm -1。N,N-Di芳基苯胺类方括号是荧光的,