Matches in SemOpenAlex for { <https://semopenalex.org/work/W4322752142> ?p ?o ?g. }
Showing items 1 to 79 of
79
with 100 items per page.
- W4322752142 endingPage "757" @default.
- W4322752142 startingPage "745" @default.
- W4322752142 abstract "Hot carriers are electrons or holes that are created in semiconductors upon the absorption of photons with energies greater than the fundamental bandgap. The excess energy of the hot carrier cools to the lattice temperature via carrier–phonon scattering and wasted as heat in [the] picoseconds timescale. The hot-carrier cooling represents a severe loss in the solar cells that have significantly limits their power conversion efficiencies. Hot carrier solar cells aim to mitigate this optical limitation by effective utilization of carriers at elevated energies. However, exploitation of hot carrier energy is extremely challenging as hot carriers rapidly lose their excess energy in phonon emission and therefore requires a substantial delay of carrier cooling in absorber material. In this paper a simple model was formulated to study the kinetic energies and hence the energy levels of the photo excited carriers in the quantum dots (QDs) whereas Schaller model was used to investigate the threshold energies of considered QDs. Results strongly indicate low threshold photon energies within the energy conservation limit for PbSe, PbTe, PbS, InAs, and InAs QDs. These materials seem to be good candidates for efficient carrier multiplication. It is found also that PbSe, PbTe, PbS, InAs, ZnS and InAs QDs exhibit promising potential for possible hot carrier absorber due to their widely spaced energy levels predicted to offer a large phononic gap between the optical and acoustic branches in the phonon dispersion. This in principle enhances phonon bottleneck effect that dramatically slows down hot carrier cooling leading to retention of hot carriers long enough to enable their exploitation. Two novel strategies were employed for the conversion of hot carriers into usable energies. The first approach involves the extraction of the energetic hot carriers while they are ‘hot’ to create higher photo voltage while the second approach uses the hot carrier to produce more carriers through impact ionization to create higher photo current. These mechanisms theoretically give rise to high overall conversion efficiencies of hot carrier energy well above Shockley and Queisser limit of conventional solar cells." @default.
- W4322752142 created "2023-03-03" @default.
- W4322752142 creator A5033571452 @default.
- W4322752142 creator A5081528583 @default.
- W4322752142 creator A5085397973 @default.
- W4322752142 date "2021-11-01" @default.
- W4322752142 modified "2023-10-17" @default.
- W4322752142 title "Hot carrier exploitation strategies and model for efficient solar cell applications" @default.
- W4322752142 doi "https://doi.org/10.15251/cl.2021.1811.745" @default.
- W4322752142 hasPublicationYear "2021" @default.
- W4322752142 type Work @default.
- W4322752142 citedByCount "0" @default.
- W4322752142 crossrefType "journal-article" @default.
- W4322752142 hasAuthorship W4322752142A5033571452 @default.
- W4322752142 hasAuthorship W4322752142A5081528583 @default.
- W4322752142 hasAuthorship W4322752142A5085397973 @default.
- W4322752142 hasBestOaLocation W43227521421 @default.
- W4322752142 hasConcept C108225325 @default.
- W4322752142 hasConcept C120665830 @default.
- W4322752142 hasConcept C121332964 @default.
- W4322752142 hasConcept C124657808 @default.
- W4322752142 hasConcept C159317903 @default.
- W4322752142 hasConcept C181966813 @default.
- W4322752142 hasConcept C191486275 @default.
- W4322752142 hasConcept C192562407 @default.
- W4322752142 hasConcept C198865614 @default.
- W4322752142 hasConcept C24169881 @default.
- W4322752142 hasConcept C26873012 @default.
- W4322752142 hasConcept C2778493138 @default.
- W4322752142 hasConcept C2780824857 @default.
- W4322752142 hasConcept C49040817 @default.
- W4322752142 hasConcept C512968161 @default.
- W4322752142 hasConcept C520434653 @default.
- W4322752142 hasConcept C544956773 @default.
- W4322752142 hasConcept C55005982 @default.
- W4322752142 hasConcept C58041110 @default.
- W4322752142 hasConcept C62520636 @default.
- W4322752142 hasConcept C7453809 @default.
- W4322752142 hasConceptScore W4322752142C108225325 @default.
- W4322752142 hasConceptScore W4322752142C120665830 @default.
- W4322752142 hasConceptScore W4322752142C121332964 @default.
- W4322752142 hasConceptScore W4322752142C124657808 @default.
- W4322752142 hasConceptScore W4322752142C159317903 @default.
- W4322752142 hasConceptScore W4322752142C181966813 @default.
- W4322752142 hasConceptScore W4322752142C191486275 @default.
- W4322752142 hasConceptScore W4322752142C192562407 @default.
- W4322752142 hasConceptScore W4322752142C198865614 @default.
- W4322752142 hasConceptScore W4322752142C24169881 @default.
- W4322752142 hasConceptScore W4322752142C26873012 @default.
- W4322752142 hasConceptScore W4322752142C2778493138 @default.
- W4322752142 hasConceptScore W4322752142C2780824857 @default.
- W4322752142 hasConceptScore W4322752142C49040817 @default.
- W4322752142 hasConceptScore W4322752142C512968161 @default.
- W4322752142 hasConceptScore W4322752142C520434653 @default.
- W4322752142 hasConceptScore W4322752142C544956773 @default.
- W4322752142 hasConceptScore W4322752142C55005982 @default.
- W4322752142 hasConceptScore W4322752142C58041110 @default.
- W4322752142 hasConceptScore W4322752142C62520636 @default.
- W4322752142 hasConceptScore W4322752142C7453809 @default.
- W4322752142 hasIssue "11" @default.
- W4322752142 hasLocation W43227521421 @default.
- W4322752142 hasOpenAccess W4322752142 @default.
- W4322752142 hasPrimaryLocation W43227521421 @default.
- W4322752142 hasRelatedWork W1554526772 @default.
- W4322752142 hasRelatedWork W1967469836 @default.
- W4322752142 hasRelatedWork W2066171371 @default.
- W4322752142 hasRelatedWork W2165204574 @default.
- W4322752142 hasRelatedWork W2170120492 @default.
- W4322752142 hasRelatedWork W2388356781 @default.
- W4322752142 hasRelatedWork W2527448987 @default.
- W4322752142 hasRelatedWork W2547056593 @default.
- W4322752142 hasRelatedWork W2915995455 @default.
- W4322752142 hasRelatedWork W810880730 @default.
- W4322752142 hasVolume "18" @default.
- W4322752142 isParatext "false" @default.
- W4322752142 isRetracted "false" @default.
- W4322752142 workType "article" @default.