Lead halide perovskites: Crystal-liquid duality, phonon glass electron crystals, and large polaron formation

Kiyoshi Miyata, Timothy L. Atallah, X. Y. Zhu

Research output: Contribution to journalReview article

78 Citations (Scopus)

Abstract

Lead halide perovskites have been demonstrated as high performance materials in solar cells and light-emitting devices. These materials are characterized by coherent band transport expected from crystalline semiconductors, but dielectric responses and phonon dynamics typical of liquids. This “crystal-liquid” duality implies that lead halide perovskites belong to phonon glass electron crystals, a class of materials believed to make the most efficient thermoelectrics. We show that the crystal-liquid duality and the resulting dielectric response are responsible for large polaron formation and screening of charge carriers, leading to defect tolerance, moderate charge carrier mobility, and radiative recombination properties. Large polaron formation, along with the phonon glass character, may also explain the marked reduction in hot carrier cooling rates in these materials.

Original languageEnglish
Article numbere1701469
JournalScience Advances
Volume3
Issue number10
DOIs
Publication statusPublished - Jan 1 2017
Externally publishedYes

Fingerprint

Phonons
Liquid Crystals
Gene Conversion
Glass
Electrons
Semiconductors
Genetic Recombination
Light
Equipment and Supplies
Lead

All Science Journal Classification (ASJC) codes

  • General

Cite this

Lead halide perovskites : Crystal-liquid duality, phonon glass electron crystals, and large polaron formation. / Miyata, Kiyoshi; Atallah, Timothy L.; Zhu, X. Y.

In: Science Advances, Vol. 3, No. 10, e1701469, 01.01.2017.

Research output: Contribution to journalReview article

@article{a551c53a062b413ca4a13aebf03fb1e6,
title = "Lead halide perovskites: Crystal-liquid duality, phonon glass electron crystals, and large polaron formation",
abstract = "Lead halide perovskites have been demonstrated as high performance materials in solar cells and light-emitting devices. These materials are characterized by coherent band transport expected from crystalline semiconductors, but dielectric responses and phonon dynamics typical of liquids. This “crystal-liquid” duality implies that lead halide perovskites belong to phonon glass electron crystals, a class of materials believed to make the most efficient thermoelectrics. We show that the crystal-liquid duality and the resulting dielectric response are responsible for large polaron formation and screening of charge carriers, leading to defect tolerance, moderate charge carrier mobility, and radiative recombination properties. Large polaron formation, along with the phonon glass character, may also explain the marked reduction in hot carrier cooling rates in these materials.",
author = "Kiyoshi Miyata and Atallah, {Timothy L.} and Zhu, {X. Y.}",
year = "2017",
month = "1",
day = "1",
doi = "10.1126/sciadv.1701469",
language = "English",
volume = "3",
journal = "Science advances",
issn = "2375-2548",
publisher = "American Association for the Advancement of Science",
number = "10",

}

TY - JOUR

T1 - Lead halide perovskites

T2 - Crystal-liquid duality, phonon glass electron crystals, and large polaron formation

AU - Miyata, Kiyoshi

AU - Atallah, Timothy L.

AU - Zhu, X. Y.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Lead halide perovskites have been demonstrated as high performance materials in solar cells and light-emitting devices. These materials are characterized by coherent band transport expected from crystalline semiconductors, but dielectric responses and phonon dynamics typical of liquids. This “crystal-liquid” duality implies that lead halide perovskites belong to phonon glass electron crystals, a class of materials believed to make the most efficient thermoelectrics. We show that the crystal-liquid duality and the resulting dielectric response are responsible for large polaron formation and screening of charge carriers, leading to defect tolerance, moderate charge carrier mobility, and radiative recombination properties. Large polaron formation, along with the phonon glass character, may also explain the marked reduction in hot carrier cooling rates in these materials.

AB - Lead halide perovskites have been demonstrated as high performance materials in solar cells and light-emitting devices. These materials are characterized by coherent band transport expected from crystalline semiconductors, but dielectric responses and phonon dynamics typical of liquids. This “crystal-liquid” duality implies that lead halide perovskites belong to phonon glass electron crystals, a class of materials believed to make the most efficient thermoelectrics. We show that the crystal-liquid duality and the resulting dielectric response are responsible for large polaron formation and screening of charge carriers, leading to defect tolerance, moderate charge carrier mobility, and radiative recombination properties. Large polaron formation, along with the phonon glass character, may also explain the marked reduction in hot carrier cooling rates in these materials.

UR - http://www.scopus.com/inward/record.url?scp=85033447331&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85033447331&partnerID=8YFLogxK

U2 - 10.1126/sciadv.1701469

DO - 10.1126/sciadv.1701469

M3 - Review article

C2 - 29043296

AN - SCOPUS:85033447331

VL - 3

JO - Science advances

JF - Science advances

SN - 2375-2548

IS - 10

M1 - e1701469

ER -