Efficient Generation of Long-Lived Triplet Excitons in 2D Hybrid Perovskite

Robert Younts; Hsin Sheng Duan; Bhoj Gautam; Bayrammurad Saparov; Jie Liu; Cedric Mongin; Felix N. Castellano; David B. Mitzi; Kenan Gundogdu

doi:10.1002/adma.201604278

Efficient Generation of Long-Lived Triplet Excitons in 2D Hybrid Perovskite

Robert Younts
, Hsin Sheng Duan
, Bhoj Gautam
, Bayrammurad Saparov
, Jie Liu
, Cedric Mongin
, Felix N. Castellano
, David B. Mitzi^*
, Kenan Gundogdu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

83 Scopus citations

Abstract

Efficient generation of long-lived triplet excitons (TEs) in 2D hybrid perovskite was demonstrated in a study. X-ray diffraction scans were conducted on (MA)₂Pb(SCN) ₂I₂ thin films as well as on the powder, and both the film and powder diffraction peaks qualitatively matched the simulated XRD patterns, indicating that single-phase (MA)₂Pb(SCN) ₂I₂ was formed in the films and used in the subsequent optical measurements. The absorbance spectrum had a narrow 1s exciton transition at approximately 2.18 eV, which was close to the onset of the band edge at 2.11 eV as determined by photoluminescence excitation (PLE) spectroscopy.

Original language	English
Article number	1604278
Journal	Advanced Materials
Volume	29
Issue number	9
DOIs	https://doi.org/10.1002/adma.201604278
State	Published - 7 Mar 2017
Externally published	Yes

Keywords

exciton diffusion
exciton lifetime
hybrid inorganic-organic perovskites
quasi-2D materials
triplet sensitizer

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/adma.201604278

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title = "Efficient Generation of Long-Lived Triplet Excitons in 2D Hybrid Perovskite",

abstract = "Efficient generation of long-lived triplet excitons (TEs) in 2D hybrid perovskite was demonstrated in a study. X-ray diffraction scans were conducted on (MA)2Pb(SCN) 2I2 thin films as well as on the powder, and both the film and powder diffraction peaks qualitatively matched the simulated XRD patterns, indicating that single-phase (MA)2Pb(SCN) 2I2 was formed in the films and used in the subsequent optical measurements. The absorbance spectrum had a narrow 1s exciton transition at approximately 2.18 eV, which was close to the onset of the band edge at 2.11 eV as determined by photoluminescence excitation (PLE) spectroscopy.",

keywords = "exciton diffusion, exciton lifetime, hybrid inorganic-organic perovskites, quasi-2D materials, triplet sensitizer",

author = "Robert Younts and Duan, \{Hsin Sheng\} and Bhoj Gautam and Bayrammurad Saparov and Jie Liu and Cedric Mongin and Castellano, \{Felix N.\} and Mitzi, \{David B.\} and Kenan Gundogdu",

year = "2017",

month = mar,

day = "7",

doi = "10.1002/adma.201604278",

language = "English",

volume = "29",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-Blackwell",

number = "9",

}

TY - JOUR

T1 - Efficient Generation of Long-Lived Triplet Excitons in 2D Hybrid Perovskite

AU - Younts, Robert

AU - Duan, Hsin Sheng

AU - Gautam, Bhoj

AU - Saparov, Bayrammurad

AU - Liu, Jie

AU - Mongin, Cedric

AU - Castellano, Felix N.

AU - Mitzi, David B.

AU - Gundogdu, Kenan

PY - 2017/3/7

Y1 - 2017/3/7

N2 - Efficient generation of long-lived triplet excitons (TEs) in 2D hybrid perovskite was demonstrated in a study. X-ray diffraction scans were conducted on (MA)2Pb(SCN) 2I2 thin films as well as on the powder, and both the film and powder diffraction peaks qualitatively matched the simulated XRD patterns, indicating that single-phase (MA)2Pb(SCN) 2I2 was formed in the films and used in the subsequent optical measurements. The absorbance spectrum had a narrow 1s exciton transition at approximately 2.18 eV, which was close to the onset of the band edge at 2.11 eV as determined by photoluminescence excitation (PLE) spectroscopy.

AB - Efficient generation of long-lived triplet excitons (TEs) in 2D hybrid perovskite was demonstrated in a study. X-ray diffraction scans were conducted on (MA)2Pb(SCN) 2I2 thin films as well as on the powder, and both the film and powder diffraction peaks qualitatively matched the simulated XRD patterns, indicating that single-phase (MA)2Pb(SCN) 2I2 was formed in the films and used in the subsequent optical measurements. The absorbance spectrum had a narrow 1s exciton transition at approximately 2.18 eV, which was close to the onset of the band edge at 2.11 eV as determined by photoluminescence excitation (PLE) spectroscopy.

KW - exciton diffusion

KW - exciton lifetime

KW - hybrid inorganic-organic perovskites

KW - quasi-2D materials

KW - triplet sensitizer

UR - https://www.scopus.com/pages/publications/85007374734

U2 - 10.1002/adma.201604278

DO - 10.1002/adma.201604278

M3 - Article

C2 - 28009459

AN - SCOPUS:85007374734

SN - 0935-9648

VL - 29

JO - Advanced Materials

JF - Advanced Materials

IS - 9

M1 - 1604278

ER -

Efficient Generation of Long-Lived Triplet Excitons in 2D Hybrid Perovskite

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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