Novel unsymmetrical organic sensitizers having donor, $\pi $-spacer, and anchoring groups were designed and synthesized for dye-sensitized solar cell (DSSC) application. The dyes 3-4-[7-(4-bis[4-(hexyl)phenyl]amino} phenyl)-11,12-dibutoxy-1,4,5,8-tetrahydrodibenzo [a, c] phenazine-2-yl]phenyl} -2-cyano acrylic acid (KD-148) and 3-5-[7-(4-bis[4-(hexyloxy)phenyl]amino} phenyl)-11,12-dibutoxy-1,4,5,8-tetrahydrodibenzo [a, c] phenazine-2-yl]-2-thienyl} -2-cyano acrylic acid (KD-150) were anchored onto TiO$_2}$ and tested with ionic liquid electrolyte. The monochromatic incident photon-to-current conversion efficiencies (IPCE) of the dyes were 50% and 60% at 420 nm, respectively. The KD-150-sensitized solar cell gave a short-circuit current (I$_SC})$ of 7.37 mA/cm$^2}$, an open-circuit voltage (V$_oc})$ of 560 mV, a fill factor (FF) of 0.56, and overall conversion efficiency ($\eta )$ of 2.32% whereas the standard dye Z-907 dye exhibited 14.51 mA/cm$^2}$ of I$_SC}$, 630 mV of V$_oc}$, 0.45 of FF, and 4.08% of $\eta $ under AM 1.5 illumination with power of 100 mW/cm$^2}$.
设计和合成了一种新型不对称有机敏化剂,具有供体、$\pi$-间隔和锚定基团,以应用于
染料敏化太阳能电池(DSSC)。
染料3-4-[7-(4-bis[4-(己基)苯基]
氨基}苯基)-11,12-二丁氧基-1,4,5,8-四氢
联苯[a,c]
菲嗪-2-基]苯}-
2-氰基丙烯酸(KD-148)和3-5-[7-(4-bis[4-(己氧基)苯基]
氨基}苯基)-11,12-二丁氧基-1,4,5,8-四氢
联苯[a,c]
菲嗪-2-基]-2-
噻吩基}-
2-氰基丙烯酸(KD-150)被锚定在TiO$_2}$上,并与
离子液体电解质进行了测试。
染料在420 nm下的单色入射光子转电流效率(IPCE)分别为50%和60%。KD-150敏化的太阳能电池给出了7.37 mA/cm$^2}$的短路电流(I$_SC}$),560 mV的开路电压(V$_oc}$),0.56的填充因子(FF),以及2.32%的整体转化效率($\eta$);而标准
染料Z-907在
AM 1.5照射下,功率为100 mW/cm$^2}$时,I$_SC}$为14.51 mA/cm$^2}$,V$_oc}$为630 mV,FF为0.45,$\eta$为4.08%。