Benzo[1, 2-b: 4, 5-b']dithiophene-based copolymers as panchromatic light sensors in organic photodiodes application

Opoku, Henry; Choy, Ji-Yeon; K, Ashok Kumar; Shrestha, Nabeen K.; Mane, Suresh D.; Bathula, Chinna

doi:10.1016/j.jmrt.2020.11.034

Cited by 6 publications

(2 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the size of the sol-gel ZnO nanoparticles is much larger, which may lead to larger interstitial regions and pinholes in the film that negatively affect electron mobility and make the active layer more susceptible to the effects of water and oxygen [89]. By introducing a polymer into the ZnO nanoparticles, a new strategy to prepare ETLs is produced in OPDs [90]. Zhao et al realized a low dark current and high photo D* transparent organic ultraviolet photodetector by using polymer-modified ZnO as the HBL [87].…”

Section: Inorganic Oxide Semiconductor Materials 231 Znomentioning

confidence: 99%

Carrier Blocking Layer Materials and Application in Organic Photodetectors

Zhang

2021

Nanomaterials

View full text Add to dashboard Cite

As a promising candidate for next-generation photodetectors, organic photodetectors (OPDs) have gained increasing interest as they offer cost-effective fabrication methods using solution processes and a tunable spectral response range, making them particularly attractive for large area image sensors on lightweight flexible substrates. Carrier blocking layers engineering is very important to the high performance of OPDs that can select a certain charge carriers (holes or electrons) to be collected and suppress another carrier. Carrier blocking layers of OPDs play a critical role in reducing dark current, boosting their efficiency and long-time stability. This Review summarizes various materials for carrier blocking layers and some of the latest progress in OPDs. This provides the reader with guidelines to improve the OPD performance via carrier blocking layers engineering.

show abstract

Section: Inorganic Oxide Semiconductor Materials 231 Znomentioning

confidence: 99%

Carrier Blocking Layer Materials and Application in Organic Photodetectors

Zhang

2021

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…A lot of experimental progress in the synthesis of electrode materials and the design of the sensitizers [11][12][13][14] have taken place but related theoretical calculations are relatively scarce. Most theoretical investigations of DSSCs are focusing on the calculation of the absorption spectra of the individual sensitizers [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Investigations of Dye-Sensitized Solar Cells

Chen,

Vishart,

Sauer

et al. 2023

J Nanotechnol Nanomaterials

View full text Add to dashboard Cite

This presentation considers theoretical investigations of dye-sensitized solar cells (DSSC). Theoretical methods were applied to investigate the interactions between titanium dioxide nanoparticles and sensitizers. The ONIOM model was used to obtain the geometries of different conformers of dye molecules with TiO2 and their binding energies. TD-DFT calculations were carried out to obtain the absorption spectra and the relative orbital energy levels of sensitizers and TiO2. The electronic couplings between different sensitizers and TiO2 were calculated using the fragment charge difference method. The redox potentials of the sensitizers are calculated to complete the full working cycle of a DSSC. We observed that the -COOH group is not the only possible binding site, and the sensitizers are more likely to be adsorbed horizontally on the TiO2 surface instead of being perpendicular to the surface having the -COOH group as a linker. The TiO2 nanoparticle was found to have minor influence on the absorptions of the sensitizers with the spectra shift smaller than 0.2 eV. TiO2 has more influence on the absorptions of softer and larger molecules because the interactions between sensitizers and TiO2 twist the conjugated chromophore structures. Compared to the neutral form, the deprotonated anion conformers of the sensitizers have larger binding energy and lower LUMO level against conduction band of TiO2. The gap between the LUMO of sensitizers and conduction band edge of TiO2 might indicate the coupling strength between the sensitizers and TiO2. Several binding groups have shown promising properties for interacting with the TiO2 nanoparticle and generally deprotonated anion forms of the dyes were strongly bonded to the TiO2 nanoparticle. The model and associated calculated results provide close agreement with experimental data and give crucial atomistic information of the relevant processes in dye-sensitized solar cells.

show abstract

Coupled effect of Ag and In addition on the microstructure and mechanical properties of Sn–Bi lead-free solder alloy

Hu,

Li,

et al. 2023

Journal of Materials Research and Technology

View full text Add to dashboard Cite

Benzo[1, 2-b: 4, 5-b']dithiophene-based copolymers as panchromatic light sensors in organic photodiodes application

Cited by 6 publications

References 26 publications

Carrier Blocking Layer Materials and Application in Organic Photodetectors

Carrier Blocking Layer Materials and Application in Organic Photodetectors

Theoretical Investigations of Dye-Sensitized Solar Cells

Coupled effect of Ag and In addition on the microstructure and mechanical properties of Sn–Bi lead-free solder alloy

Contact Info

Product

Resources

About