Alkyloxy substituted organic dyes for high voltage dye-sensitized solar cell: Effect of alkyloxy chain length on open-circuit voltage
摘要:
Three novel organic dyes (SB1, SB2, and SB3) containing 4-(hexyloxy)-N-(4-(hexyloxy)phenyl)-N-phenylaniline as electron donor and cyanoacrylic acid as electron acceptor bridged by alkyloxy (methyl = SB1, propyl = SB2 and hexyl = SB3) substituted p-phenylenevinylene linkers have been synthesized. Density functional theory (DFT) has employed to study electron distribution and intramolecular charge transfer. Increase in alkyl chain length in alkyloxy substituent leads to increase in open-circuit voltage (V-OC), which is found to be related to the increased electron lifetime at open-circuit condition. Under AM 1.5 G 1 sun light illumination (100 mW/cm(2)), an optimized SB3-sensitized cell show a short-circuit photocurrent density (J(SC)) of 12.83 mA/cm(2), an open-circuit voltage (V-OC) of 0.745 V and a fill factor (FF) of 0.64, corresponding to an overall conversion efficiency (eta) of 6.12%. Little degradation in eta observed over 40 days is indicative of long-term stability of the SB-series dyes. (C) 2011 Elsevier Ltd. All rights reserved.
Alkyloxy substituted organic dyes for high voltage dye-sensitized solar cell: Effect of alkyloxy chain length on open-circuit voltage
摘要:
Three novel organic dyes (SB1, SB2, and SB3) containing 4-(hexyloxy)-N-(4-(hexyloxy)phenyl)-N-phenylaniline as electron donor and cyanoacrylic acid as electron acceptor bridged by alkyloxy (methyl = SB1, propyl = SB2 and hexyl = SB3) substituted p-phenylenevinylene linkers have been synthesized. Density functional theory (DFT) has employed to study electron distribution and intramolecular charge transfer. Increase in alkyl chain length in alkyloxy substituent leads to increase in open-circuit voltage (V-OC), which is found to be related to the increased electron lifetime at open-circuit condition. Under AM 1.5 G 1 sun light illumination (100 mW/cm(2)), an optimized SB3-sensitized cell show a short-circuit photocurrent density (J(SC)) of 12.83 mA/cm(2), an open-circuit voltage (V-OC) of 0.745 V and a fill factor (FF) of 0.64, corresponding to an overall conversion efficiency (eta) of 6.12%. Little degradation in eta observed over 40 days is indicative of long-term stability of the SB-series dyes. (C) 2011 Elsevier Ltd. All rights reserved.
Reversed Y-shape di-anchoring sensitizers for dye sensitized solar cells based on benzimidazole core
作者:Mulu Berhe Desta、Sumit Chaurasia、Jiann T. Lin
DOI:10.1016/j.dyepig.2017.01.068
日期:2017.5
Three new Y-shaped D-(π-A)2 di-anchoring organic dyes comprising an arylamine as the electrondonor, 2-cyanoacrylic acid as electron acceptors and various 2,4,7-trisubstituted benzimidazole entity as the π-linkers/spacers, have been synthesized for dye-sensitizedsolarcells. The new dyes MD2 and MD3 show red-shifted absorption in solution spectra when compared with their congeners (8b and 9b) without
Synthesis of novel isophorone-based dyes for dye-sensitized solar cells
作者:Yih-Chun Chen、Yan-Zuo Lin、Yu-Ting Cheng、Yuan Jay Chang
DOI:10.1039/c5ra17898c
日期:——
Four organic dyes containing isophorone as the π-bridge unit were synthesised and their photophysical and electrochemical properties were characterised.
Push–pull triphenylamine based chromophores as photosensitizers and electron donors for molecular solar cells
作者:Ana Aljarilla、Cristina Herrero-Ponce、Pedro Atienzar、Susana Arrechea、Pilar de la Cruz、Fernando Langa、Hermenegildo García
DOI:10.1016/j.tet.2013.05.137
日期:2013.8
A series of push–pullchromophores (1–6) comprising triphenylamine as donor and methylenethiazole, bearing electron-withdrawing groups in the 2′ position, as terminal acceptor groups have been developed. The resulting dyes were characterized by UV–vis and fluorescence spectroscopies, cyclic and OSWV voltammetries and thermal analysis. The low energy absorption band of these oligomers was located at
push–pull type meso-ester substituted BODIPY dyes 1–4 with intense near-infrared absorption, largely enhanced photoacoustic (PA) activity and excellent photo-stability were synthesized. The impact of the electronic structure on the PA activity was also discussed. Moreover, the in vitro and in vivo PA imaging were investigated, which suggested a passive targeting capacity in the tumor site.