Poly(3,3-dibenzyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine)/Platinum Composite Films as Potential Counter Electrodes for Dye-Sensitized Solar Cells

Abstract

In this study, poly(3,3-dibenzyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine)/platinum composite films (PProDOT-Bz2/Pt) were used as counter electrodes (CEs) in dye-sensitized solar cells (DSSCs). The composite films were prepared on fluorine-doped tin oxide (FTO) glass by radio frequency (RF) sputtering to deposit platinum (Pt) for 30 s. Afterwards, PProDOT-Bz2 was deposited on the Pt–FTO glass via electrochemical polymerization. The electron transfer process of DSSCs was investigated using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The DSSCs with 0.05 C/cm2 PProDOT-Bz2-Pt composite films showed an open circuit voltage (Voc) of 0.70 V, a short-circuit current density (Jsc) of 7.27 mA/cm2, and a fill factor (F.F.) of 68.74%. This corresponded to a photovoltaic conversion efficiency (η) of 3.50% under a light intensity of 100 mW/cm2.

Electrosynthesis of Copolymers Based on 1,3,5-Tris(N-Carbazolyl)Benzene and 2,2′-Bithiophene and Their Applications in Electrochromic Devices

“…Recently, scientists have paid attention to the applications of CPs as electrode materials in electrochromic devices (ECDs) because CPs are capable of changing their optical properties at various voltages [ 4 ]. CPs have been extensively used for several regions, such as solar cells [ 5 , 6 ], catalysts [ 7 , 8 , 9 ], polymer light-emitting diodes [ 10 , 11 , 12 ], supercapacitors [ 13 , 14 ], sensors [ 15 , 16 ], and ECDs [ 17 , 18 ].…”

Effect of supporting electrolyte on capacitance and morphology of electrodeposited poly(3,4-propylenedioxythiophene) derivatives bearing reactive functional groups

“…Although poly(3,4-propylenedioxythiophene) (PProDOT) and its derivatives bearing an additional carbon atom in the alkylene ether bridge were initially developed for the improvement of the electrochromic properties of PEDOT, 33,34 a multitude of non-functionalized and functionalized PProDOT derivatives have been later on synthesized for application in photovoltaics, 35–44 sensors, 45–49 biosensors, 50–54 actuators, 55 and supercapacitors. 56–65 Electrodeposition of poly[3,4-(2,2-dimethylpropylenedioxy)thiophene] (PProDOT–Me 2 ) onto carbon fiber microelectrode (CFME) from ACN revealed decreasing low-frequency capacitance values for different electrolytes in the order Et 4 NPF 6 > Et 4 NBF 4 .…”

Passivating ZnO Surface States by C60 Pyrrolidine Tris-Acid for Hybrid Solar Cells Based on Poly(3-hexylthiophene)/ZnO Nanorod Arrays

“…Polymer solar cells have recently attracted extensive attentions in the fields of portable electronics, wearable devices, building-integrated electricity supply and solar-powered airplane, due to their high efficiencies, low cost, light weight, flexibility and compatibility with roll-to-roll manufacturing [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Recent studies mainly concentrate on developing new electron donors and acceptors, delicately controlling the nano-morphology and optimizing the device architectures, etc., enabling the efficiencies over 11% [ 11 , 12 , 13 , 14 , 15 , 16 ].…”