Evidence map›Paper›PMID 37862422›Full record

ArticleScience advances2023

A composite electrodynamic mechanism to reconcile spatiotemporally resolved exciton transport in quantum dot superlattices.

Rongfeng Yuan, Trevor D Roberts, Rafaela M Brinn, Alexander A Choi, Ha H Park, Chang Yan, Justin C Ondry, Siamak Khorasani, David J Masiello, Ke Xu and 2 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Science advances, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Rongfeng YuanDepartment of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA.ORCID 0000-0002-6572-2472
Trevor D RobertsDepartment of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA.ORCID 0000-0003-0871-5361
Rafaela M BrinnDepartment of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA.ORCID 0000-0002-2788-5334
Alexander A ChoiDepartment of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA.ORCID 0000-0003-2119-8995
Ha H ParkDepartment of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA.ORCID 0000-0003-2290-7992
Chang YanDepartment of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA.ORCID 0000-0001-9735-3002
Justin C OndryDepartment of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA.ORCID 0000-0001-9113-3420
Siamak KhorasaniDepartment of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA.ORCID 0000-0003-4395-6910
David J MasielloDepartment of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA.ORCID 0000-0002-1187-0920
Ke XuDepartment of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA.ORCID 0000-0002-2788-194X
A Paul AlivisatosDepartment of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA.ORCID 0000-0001-6895-9048
Naomi S GinsbergDepartment of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA.ORCID 0000-0002-5660-3586

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Quantum dot (QD) solids are promising optoelectronic materials; further advancing their device functionality requires understanding their energy transport mechanisms. The commonly invoked near-field Förster resonance energy transfer (FRET) theory often underestimates the exciton hopping rate in QD solids, yet no consensus exists on the underlying cause. In response, we use time-resolved ultrafast stimulated emission depletion (STED) microscopy, an ultrafast transformation of STED to spatiotemporally resolve exciton diffusion in tellurium-doped cadmium selenide-core/cadmium sulfide-shell QD superlattices. We measure the concomitant time-resolved exciton energy decay due to excitons sampling a heterogeneous energetic landscape within the superlattice. The heterogeneity is quantified by single-particle emission spectroscopy. This powerful multimodal set of observables provides sufficient constraints on a kinetic Monte Carlo simulation of exciton transport to elucidate a composite transport mechanism that includes both near-field FRET and previously neglected far-field emission/reabsorption contributions. Uncovering this mechanism offers a much-needed unified framework in which to characterize transport in QD solids and additional principles for device design.

Identifiers

PMID37862422
PMCPMC10588942

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