ArticleThe journal of physical chemistry letters2023
Electron Trapping Prolongs the Lifetime of Charge-Separated States in 2D Perovskite Nanoplatelet-Hole Acceptor Complexes.
Article in The journal of physical chemistry letters, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 22 citations in OpenAlex.
- Generating Long-Lived Highly Excited Carriers in Undoped Perovskite Nanostructures by Two-Photon Upconversion.Nano letters · 2026Article
- Single-Particle Insights Into the Electronic Structure and Enhanced Stability of CsPbBrSmall (Weinheim an der Bergstrasse, Germany) · 2026Article
- The Impact of Vanadium Oxide Cocatalysts on the Photocatalytic Performance of Strontium Titanates.International journal of molecular sciences · 2026Article
- Decoding Trap States in Working 2D Perovskite Multi-Functional Devices.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Unraveling the Nanosecond Photoresponse of Layered HgPSeNano letters · 2025Article
- Hot Carrier Trapping and It's Influence to the Carrier Diffusion in CsPbBrAdvanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Two-dimensional (2D) lead halide perovskite nanoplatelets (NPLs) are promising materials for blue light emission because of the strong quantum confinement in the 2D morphology. However, the identity of carrier traps and the trap influence on charge transfer in these NPLs remain unclear. Herein, transient absorption studies revealed two types of electron traps in 3 monolayer lead bromide perovskite NPLs with trapping lifetime of 9.0 ± 0.6 and 516 ± 59 ps, respectively, while no hole traps were observed. Systematic charge transfer experiments show that electron traps have negligible influence on ultrafast electron transfer or hole transfer but extend the half-lifetime of the charge-separated state from 2.1 ± 0.1 to 68 ± 3 ns after hole transfer, which is explained by the reduced electron-hole overlap. This work contributes to the understanding of the fundamental carrier dynamics in 2D perovskite NPLs and offers guidelines for boosting their performance in optoelectronics and photocatalysis.
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