Improving the Efficiency of Dye-Sensitized Solar Cells via the Impact of Triphenylamine-Based Inventive Organic Additives on Biodegradable Cellulose Polymer Gel Electrolytes

Abstract

Dye-sensitized solar cells based on biopolymer gel electrolyte systems deal with the perspective of good power conversion efficiency with low-cost fabrication. In this work, we synthesized an electron-rich triphenylamine core as an organic additive for hydroxyethyl cellulose (HEC) polymer gel electrolytes with a redox couple (I − /I 3 − ), which is efficient for DSSCs. The presence of a more conjugated system and heteroatoms in additives paved the way for the whole mobility transport and quasi-Fermi level shift, which reduces the recombination reaction between the TiO 2 surface and I 3 − ion, enhancing the organic photovoltaic properties. The electrochemical and photovoltaic properties of HEC gel electrolytes without additives (bare HEC) and with an additive ( 4-(di(1H-pyrrol-2-yl)methyl)-N,Ndiphenylaniline (DPMDA), (1H-phenanthro[9,10-d]imidazol-2-yl)-N,N-diphenylaniline (PIDA), 4-(di(1H-pyrrol-2-yl)methyl)-N-(4-(di(1H-pyrrol-2-yl)methyl)phenyl)-N-phenylaniline (DPMPPA), N-(4-(1H-phenanthro[9,10-d]imidazol-2-yl)phenyl)-4-(1H-phenanthro[9,10-d]imidazol-2-yl)-N-phenylaniline (DPIPA), tris(4-(di-(1H-pyrrol-2-yl)methyl)phenyl)amine (TDPMPA), and tris(4-(1H-phenanthro[9,10-d]imidazol-2-yl)phenyl)amine (TPIPA)) were studied, respectively; one of the organic additive tris(4-(1H-phenanthro[9,10-d]imidazol-2-yl)phenyl)amine [TPIPA]-based polymer gel electrolytes (A6: TiO 2 /N3 dye/HEC/I − /I 3− /TPIPA/Pt) showed good electrochemical properties, longer electron lifetime, and hence an improved photoconversion efficiency of 5.72% with better stability under light illumination of 100 mW/cm 2 .

Performance of 4-Subsituted Pyridine Based Additive and Cobalt Redox in Poly(ethylene glycol)–Hydroxyethylcellulose Polymer Electrolytes with DTTCY Acid Sensitizer on Dye Sensitized Solar Cells

“…The electron densities that occur at the photoelectrode/electrolyte interface are related to the charge recombination rate that is reflected in the electron lifetime (τ n ), which calculated using the following equation: , where f min is the frequency at the minimum phase obtained from the Bode phase plot displayed in Figure c. The electron lifetime of the DTTCY sensitizer was studied with differing additives as shown in Table , which results in altering the internal standard and blending nature of the QSSE.…”

“…Electron Lifetime. The electron densities that occur at the photoelectrode/electrolyte interface are related to the charge recombination rate that is reflected in the electron lifetime (τ n ), which calculated using the following equation: 40,41…”

Functionalized polyurethane composite gel electrolyte with cosensitized photoanode for higher solar cell efficiency using a passivation layer

“…The schematic reaction of the formation of GO-tagged polyurethane (PU-GO) in three stages of polymerization and subsequent functionalization of polyurethane polymer (SPU-GO) are shown in Scheme 1. 1 H NMR and FTIR spectroscopic measurements were used to conrm the chemical tagging of graphene oxide in polymer chains and its subsequent functionalization of the polymer (PU-GO). Fig.…”

“…Thus, researchers are trying to discover novel renewable clean energy resources to fulll the energy demands of society. 1,2 The energy demand has enhanced 16 times in the 21 st century along with the world population and this energy demand is increasing day by day at a greater efficient rate. The largest renewable power source of our systems is solar irradiation.…”

Review on the Revolution of Polymer Electrolytes for Dye-Sensitized Solar Cells

“…This is because its presence has increased the number of dye detachments on the TiO 2 It is more stable and does not suffer from dye detachment. The fabricated DSSC has achieved an efficiency of 3.55% under an irradiation intensity of 1 sun and remained stable even after accelerated aging of 1000 h. On the other hand, Raja and coworkers 68 had studied the potentiality of another cellulose derivative which is the hydroxyethyl cellulose (HEC) as a host polymer. Here, they formulated a biopolymer gel electrolyte of HEC with KI, I 2 , and six synthesized triphenylamine core organic additives.…”