Self-trapped electrons and holes in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">PbBr</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>crystals

Iwanaga, Masanobu; Azuma, Junpei; Shirai, Masanobu; Tanaka, Kōichiro; Hayashi, Tetsusuke

doi:10.1103/physrevb.65.214306

Cited by 38 publications

(32 citation statements)

References 24 publications

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“…The recent ESR study 11 supports the relaxed state of excitons structurally. A similar relaxation in PbCl 2 has been pointed out, 19 but the structures of the localized states have not been explored fully as already described.…”

Section: Introductionmentioning

confidence: 85%

“…11 However, the present ESR study on PbCl 2 shows that the relaxed states of e-h pairs are STH's and trapped electrons below 50 K, STH's and STEL's at 60-70 K, and the A centers and STEL's at 80-130 K (Fig. 10).…”

Section: Relaxation Dynamics Of Electron-hole Pairsmentioning

confidence: 99%

“…10) and PbCl 2 are monomer Pb 3+ centers while STH centers in PbBr 2 are dimer Br 2 − centers. 11 The relaxed states indicate that holes in β-PbF 2 and PbCl 2 strongly interact with Pb 2+ ions while holes in PbBr 2 do with Br − ions. The top of the valence band in PbCl 2 is composed of about half-to-half Pb 2+ (6s) and Cl − (3p), 12 but the holes nevertheless localize only on Pb 2+ ions.…”

Section: Relaxation Dynamics Of Electron-hole Pairsmentioning

confidence: 99%

“…The details of ESR and thermoluminescence (TL) measurements were previously reported in Ref. 11. Raising-and lowering-rates of temperature in measuring TL were 0.5 K/s.…”

Section: Introductionmentioning

confidence: 99%

“…11 The configurations of selftrapped holes (STH's) are different between PbF 2 and PbBr 2 . The difference is qualitatively explained by the components at the top of the valence bands; the 6s states of Pb 2+ are the main component in PbF 2 , while the 4p states of Br − mainly constitute the valence band in PbBr 2 (Ref.…”

Section: Introductionmentioning

confidence: 99%

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Self-trapped states and related luminescence inPbCl2crystals

et al. 2002

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We have comprehensively investigated localized states of photoinduced electron-hole pairs with electron-spin-resonance technique and photoluminescence (PL) in a wide temperature range of 5-200 K. At low temperatures below 70 K, holes localize on Pb 2+ ions and form self-trapping hole centers of Pb 3+ . The holes transfer to other trapping centers above 70 K. On the other hand, electrons localize on two Pb 2+ ions at higher than 50 K and form self-trapping electron centers of Pb2 3+ . From the thermal stability of the localized states and PL, we clarify that blue-green PL band at 2.50 eV is closely related to the self-trapped holes.

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Section: Introductionmentioning

confidence: 85%

Section: Relaxation Dynamics Of Electron-hole Pairsmentioning

confidence: 99%

Section: Relaxation Dynamics Of Electron-hole Pairsmentioning

confidence: 99%

“…The details of ESR and thermoluminescence (TL) measurements were previously reported in Ref. 11. Raising-and lowering-rates of temperature in measuring TL were 0.5 K/s.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Self-trapped states and related luminescence inPbCl2crystals

et al. 2002

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Broadband Emission Origin in Metal Halide Perovskites: Are Self‐Trapped Excitons or Ions?

Jiang

et al. 2023

Advanced Materials

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It has always been a goal to realize high efficiency and broadband emission in the single‐component materials. The appearance of metal halide perovskites makes it possible. Their soft lattice characteristics and significant electron‐phonon coupling synergistically generate the self‐trapped excitons (STEs), contributing to the broadband emission with a large Stokes shift. Meanwhile, their structural/compositional diversity provides suitable active sites and coordination environments for ns2 ions doping, allowing 3Pn (n = 0, 1, 2)→1S0 transitions toward the broadband emission. The ns2 ions emission is phenomenologically similar to that of the STE emission, preventing people from in‐depth understanding their emission origin, thus failure to meeting the design requirements to serve the various sectors of practical applications. In this scenario, we deploy this review by summarizing the fundamentals and development of such two emission mechanisms, to establish a clear and comprehensive understanding of the broadband emission phenomenon, which may pave the way to an ideal customization of broadband‐emission metal halide perovskites.This article is protected by copyright. All rights reserved

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Bulk Assembly of Corrugated 1D Metal Halides with Broadband Yellow Emission

Lin

Zhou

Neu

et al. 2019

Advanced Optical Materials

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The family of molecular level low dimensional organic metal halide hybrids has expanded significantly over the last few years. Here we report a new type of one-dimensional (1D) metal halide structure, in which metal halide octrahedra form a corrugated double-chain structure via non-planar edge-sharing. This material with a chemical formula of C 5 H 16 N 2 Pb 2 Br 6 exhibits a broadband yellow emission under ultraviolet light excitation with a photoluminescence quantum efficiency (PLQE) of around 10 %. The light-yellow emission is considered to be attributed to self-trapping excitons. Theoretical calculations show that the unique alignment of the octahedra leads to small band dispersion and large exciton binding energy. Together with previously reported 1D metal halide wires and tubes, this new bulk assembly of 1D metal halides suggests the potential to develop a library of bulk assemblies of metal halides with controlled structures and compositions.Received: ((will be filled in by the editorial staff))Revised: ((will be filled in by the editorial staff))

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Self-trapped electrons and holes inPbBr2crystals

Cited by 38 publications

References 24 publications

Self-trapped states and related luminescence inPbCl2crystals

Self-trapped states and related luminescence inPbCl2crystals

Broadband Emission Origin in Metal Halide Perovskites: Are Self‐Trapped Excitons or Ions?

Bulk Assembly of Corrugated 1D Metal Halides with Broadband Yellow Emission

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