{"doi":"10.1126/sciadv.adh2410","title":"A composite electrodynamic mechanism to reconcile spatiotemporally resolved exciton transport in quantum dot superlattices","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.","journal":"Science Advances","year":2023,"id":345173,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":13,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9512,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2023-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":955772,"name":"Trevor D. Roberts","orcid":"0000-0003-0871-5361","position":1,"is_corresponding":false},{"id":1084599,"name":"Rafaela M. Brinn","orcid":"0000-0002-2788-5334","position":2,"is_corresponding":false},{"id":828545,"name":"Alexander A. Choi","orcid":"0000-0003-2119-8995","position":3,"is_corresponding":false},{"id":828546,"name":"Ha H. Park","orcid":"0000-0003-2290-7992","position":4,"is_corresponding":false},{"id":1084600,"name":"Chang Yan","orcid":"0000-0001-9735-3002","position":5,"is_corresponding":false},{"id":369470,"name":"Justin C. Ondry","orcid":"0000-0001-9113-3420","position":6,"is_corresponding":false},{"id":1084601,"name":"Siamak Khorasani","orcid":"0000-0003-4395-6910","position":7,"is_corresponding":false},{"id":415277,"name":"David J. Masiello","orcid":"0000-0002-1187-0920","position":8,"is_corresponding":false},{"id":218681,"name":"Ke Xu","orcid":"0000-0002-2788-194X","position":9,"is_corresponding":false},{"id":52402,"name":"A. Paul Alivisatos","orcid":"0000-0001-6895-9048","position":10,"is_corresponding":false},{"id":724040,"name":"Naomi S. Ginsberg","orcid":"0000-0002-5660-3586","position":11,"is_corresponding":false},{"id":1084598,"name":"Rongfeng Yuan","orcid":"0000-0002-6572-2472","position":0,"is_corresponding":true}],"reference_count":59,"raw_metadata":null,"created_at":"2026-07-19T01:11:39.484741Z","pmid":"37862422","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}