Covalent Networking of a Conjugated‐Polymer Photocatalyst to Promote Exciton Diffusion in the Aqueous Phase for Efficient Hydrogen Production
Sign Up to like & getrecommendations! Published in 2022 at "Small Methods"
DOI: 10.1002/smtd.202200010
Abstract: A conjugated polymer particle in an aqueous phase is covalently networked in 3D by crosslinking with azide groups, leading to significantly enhanced activity—a high photocatalytic H2 evolution rate (11 024 µmol g−1 h−1 (λ >… read more here.
Keywords: exciton diffusion; aqueous phase; conjugated polymer; phase efficient ... See more keywords
Manipulation of the exciton diffusion length of conjugated polymer nanoparticles: role of electron and hole scavenger molecules
Sign Up to like & getrecommendations! Published in 2020 at "Bulletin of Materials Science"
DOI: 10.1007/s12034-019-2035-6
Abstract: Exciton generation, migration and dissociation are key fundamental processes that dictate the efficiency of optoelectronic devices. Here, we investigate exciton diffusion process of conjugated polymer nanoparticles (PNPs) in the presence of electron and hole scavenger… read more here.
Keywords: hole scavenger; scavenger molecules; exciton diffusion; hole ... See more keywords
Boron subphthalocyanine chloride crystalline thin film with a long range exciton diffusion length grown assisted by negative surface charges
Sign Up to like & getrecommendations! Published in 2017 at "Thin Solid Films"
DOI: 10.1016/j.tsf.2017.07.001
Abstract: Abstract Boron subphthalocyanine chloride (SubPc) crystalline thin film has been fabricated under the help of negative surface charges and its growth mechanism is discussed as well. This thin film is composed of triangular grains and… read more here.
Keywords: exciton diffusion; thin film; crystalline thin; diffusion length ... See more keywords
Anisotropic Triplet Exciton Diffusion in Crystalline Functionalized Pentacene
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Physical Chemistry C"
DOI: 10.1021/acs.jpcc.0c07608
Abstract: Exciton multiplication through singlet fission (SF) offers scope for next-generation photovoltaic devices to exceed the Shockley–Queisser limit. Organic SF chromophores typically exhibit significan... read more here.
Keywords: exciton diffusion; anisotropic triplet; diffusion crystalline; exciton ... See more keywords
Effect of Annealing on Exciton Diffusion in a High Performance Small Molecule Organic Photovoltaic Material
Sign Up to like & getrecommendations! Published in 2017 at "ACS Applied Materials & Interfaces"
DOI: 10.1021/acsami.6b16487
Abstract: Singlet exciton diffusion was studied in the efficient organic photovoltaic electron donor material DTS(FBTTh2)2. Three complementary time-resolved fluorescence measurements were performed: quenching in planar heterojunctions with an electron acceptor, exciton–exciton annihilation, and fluorescence depolarization. The… read more here.
Keywords: exciton diffusion; diffusion; effect annealing; material ... See more keywords
Neutral Exciton Diffusion in Monolayer MoS2.
Sign Up to like & getrecommendations! Published in 2020 at "ACS nano"
DOI: 10.1021/acsnano.0c05305
Abstract: Monolayer transition metal dichalcogenides (TMDCs) are promising materials for next generation optoelectronic devices. The exciton diffusion length is a critical parameter that reflects the quality of exciton transport in monolayer TMDCs and limits the performance… read more here.
Keywords: exciton diffusion; diffusion; monolayer; diffusion lengths ... See more keywords
Organic Photovoltaic Catalyst with Extended Exciton Diffusion for High-Performance Solar Hydrogen Evolution.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.2c03161
Abstract: The short exciton diffusion length (LD) associated with most classical organic photocatalysts (5-10 nm) imposes severe limits on photocatalytic hydrogen evolution efficiency. Here, a photovoltaic molecule (F1) without electron-deficient units at the central building block… read more here.
Keywords: exciton diffusion; photovoltaic; hydrogen evolution; evolution ... See more keywords
Exciton Diffusion and Annihilation in an sp2 Carbon-Conjugated Covalent Organic Framework.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.2c04742
Abstract: To optimize the optical and optoelectronic functionalities of two-dimensional (2D) covalent organic frameworks (COFs), detailed properties of emissive and nonradiative pathways after photoexcitation need to be elucidated and linked to particular structural designs. Here, we… read more here.
Keywords: exciton; exciton diffusion; diffusion; covalent organic ... See more keywords
Exciton Diffusion in Organic Nanofibers: A Monte Carlo Study on the Effects of Temperature and Dimensionality
Sign Up to like & getrecommendations! Published in 2018 at "Scientific Reports"
DOI: 10.1038/s41598-018-32232-5
Abstract: Organic nanofibers have found various applications in optoelectronic devices. In such devices, exciton diffusion is a major aspect concerning their efficiency. In the case of singlet excitons, Förster transfer is the mechanism responsible for this… read more here.
Keywords: exciton diffusion; diffusion; monte carlo; organic nanofibers ... See more keywords
Nanoscale triplet exciton diffusion via imaging of up-conversion emission from single hybrid nanoparticles in molecular crystals.
Sign Up to like & getrecommendations! Published in 2017 at "Nanoscale"
DOI: 10.1039/c7nr01569k
Abstract: Up-conversion materials composed of donor and acceptor molecules which convert low energy photons into higher energy ones by triplet-triplet annihilation can improve the sensitivity of photocatalysts or the efficiency of solar cells. The use of… read more here.
Keywords: exciton diffusion; diffusion; triplet exciton; triplet ... See more keywords
Triplet excitons: improving exciton diffusion length for enhanced organic photovoltaics
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Materials Chemistry A"
DOI: 10.1039/c8ta10037c
Abstract: Organic materials containing heavy atoms have been used in photovoltaics to overcome a fundamental limitation: short exciton diffusion length (LD). We highlight studies showing increased LD in solar cells using triplet-generating materials and tackle challenges… read more here.
Keywords: diffusion length; triplet excitons; exciton diffusion;