Scaling law for excitons in 2D perovskite quantum wells

J. C. Blancon, A. V. Stier, H. Tsai, W. Nie, C. C. Stoumpos, B. Traoré, L. Pedesseau, M. Kepenekian, F. Katsutani, G. T. Noe, J. Kono, S. Tretiak, S. A. Crooker, C. Katan, Mercouri G Kanatzidis, J. J. Crochet, J. Even, A. D. Mohite

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

Ruddlesden-Popper halide perovskites are 2D solution-processed quantum wells with a general formula A2A' n-1M n X3n+1, where optoelectronic properties can be tuned by varying the perovskite layer thickness (n-value), and have recently emerged as efficient semiconductors with technologically relevant stability. However, fundamental questions concerning the nature of optical resonances (excitons or free carriers) and the exciton reduced mass, and their scaling with quantum well thickness, which are critical for designing efficient optoelectronic devices, remain unresolved. Here, using optical spectroscopy and 60-Tesla magneto-absorption supported by modeling, we unambiguously demonstrate that the optical resonances arise from tightly bound excitons with both exciton reduced masses and binding energies decreasing, respectively, from 0.221 m 0 to 0.186 m 0 and from 470 meV to 125 meV with increasing thickness from n equals 1 to 5. Based on this study we propose a general scaling law to determine the binding energy of excitons in perovskite quantum wells of any layer thickness.

Original languageEnglish
Article number2254
JournalNature Communications
Volume9
Issue number1
DOIs
Publication statusPublished - Dec 1 2018

Fingerprint

Scaling laws
scaling laws
Semiconductor quantum wells
excitons
quantum wells
optical resonance
Binding energy
Optoelectronic devices
binding energy
Semiconductors
perovskites
optoelectronic devices
halides
Spectrum Analysis
LDS 751
perovskite
Semiconductor materials
scaling
Equipment and Supplies
spectroscopy

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Blancon, J. C., Stier, A. V., Tsai, H., Nie, W., Stoumpos, C. C., Traoré, B., ... Mohite, A. D. (2018). Scaling law for excitons in 2D perovskite quantum wells. Nature Communications, 9(1), [2254]. https://doi.org/10.1038/s41467-018-04659-x

Scaling law for excitons in 2D perovskite quantum wells. / Blancon, J. C.; Stier, A. V.; Tsai, H.; Nie, W.; Stoumpos, C. C.; Traoré, B.; Pedesseau, L.; Kepenekian, M.; Katsutani, F.; Noe, G. T.; Kono, J.; Tretiak, S.; Crooker, S. A.; Katan, C.; Kanatzidis, Mercouri G; Crochet, J. J.; Even, J.; Mohite, A. D.

In: Nature Communications, Vol. 9, No. 1, 2254, 01.12.2018.

Research output: Contribution to journalArticle

Blancon, JC, Stier, AV, Tsai, H, Nie, W, Stoumpos, CC, Traoré, B, Pedesseau, L, Kepenekian, M, Katsutani, F, Noe, GT, Kono, J, Tretiak, S, Crooker, SA, Katan, C, Kanatzidis, MG, Crochet, JJ, Even, J & Mohite, AD 2018, 'Scaling law for excitons in 2D perovskite quantum wells', Nature Communications, vol. 9, no. 1, 2254. https://doi.org/10.1038/s41467-018-04659-x
Blancon JC, Stier AV, Tsai H, Nie W, Stoumpos CC, Traoré B et al. Scaling law for excitons in 2D perovskite quantum wells. Nature Communications. 2018 Dec 1;9(1). 2254. https://doi.org/10.1038/s41467-018-04659-x
Blancon, J. C. ; Stier, A. V. ; Tsai, H. ; Nie, W. ; Stoumpos, C. C. ; Traoré, B. ; Pedesseau, L. ; Kepenekian, M. ; Katsutani, F. ; Noe, G. T. ; Kono, J. ; Tretiak, S. ; Crooker, S. A. ; Katan, C. ; Kanatzidis, Mercouri G ; Crochet, J. J. ; Even, J. ; Mohite, A. D. / Scaling law for excitons in 2D perovskite quantum wells. In: Nature Communications. 2018 ; Vol. 9, No. 1.
@article{55a7c0d255e1405f8e37916bf72416d3,
title = "Scaling law for excitons in 2D perovskite quantum wells",
abstract = "Ruddlesden-Popper halide perovskites are 2D solution-processed quantum wells with a general formula A2A' n-1M n X3n+1, where optoelectronic properties can be tuned by varying the perovskite layer thickness (n-value), and have recently emerged as efficient semiconductors with technologically relevant stability. However, fundamental questions concerning the nature of optical resonances (excitons or free carriers) and the exciton reduced mass, and their scaling with quantum well thickness, which are critical for designing efficient optoelectronic devices, remain unresolved. Here, using optical spectroscopy and 60-Tesla magneto-absorption supported by modeling, we unambiguously demonstrate that the optical resonances arise from tightly bound excitons with both exciton reduced masses and binding energies decreasing, respectively, from 0.221 m 0 to 0.186 m 0 and from 470 meV to 125 meV with increasing thickness from n equals 1 to 5. Based on this study we propose a general scaling law to determine the binding energy of excitons in perovskite quantum wells of any layer thickness.",
author = "Blancon, {J. C.} and Stier, {A. V.} and H. Tsai and W. Nie and Stoumpos, {C. C.} and B. Traor{\'e} and L. Pedesseau and M. Kepenekian and F. Katsutani and Noe, {G. T.} and J. Kono and S. Tretiak and Crooker, {S. A.} and C. Katan and Kanatzidis, {Mercouri G} and Crochet, {J. J.} and J. Even and Mohite, {A. D.}",
year = "2018",
month = "12",
day = "1",
doi = "10.1038/s41467-018-04659-x",
language = "English",
volume = "9",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

TY - JOUR

T1 - Scaling law for excitons in 2D perovskite quantum wells

AU - Blancon, J. C.

AU - Stier, A. V.

AU - Tsai, H.

AU - Nie, W.

AU - Stoumpos, C. C.

AU - Traoré, B.

AU - Pedesseau, L.

AU - Kepenekian, M.

AU - Katsutani, F.

AU - Noe, G. T.

AU - Kono, J.

AU - Tretiak, S.

AU - Crooker, S. A.

AU - Katan, C.

AU - Kanatzidis, Mercouri G

AU - Crochet, J. J.

AU - Even, J.

AU - Mohite, A. D.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Ruddlesden-Popper halide perovskites are 2D solution-processed quantum wells with a general formula A2A' n-1M n X3n+1, where optoelectronic properties can be tuned by varying the perovskite layer thickness (n-value), and have recently emerged as efficient semiconductors with technologically relevant stability. However, fundamental questions concerning the nature of optical resonances (excitons or free carriers) and the exciton reduced mass, and their scaling with quantum well thickness, which are critical for designing efficient optoelectronic devices, remain unresolved. Here, using optical spectroscopy and 60-Tesla magneto-absorption supported by modeling, we unambiguously demonstrate that the optical resonances arise from tightly bound excitons with both exciton reduced masses and binding energies decreasing, respectively, from 0.221 m 0 to 0.186 m 0 and from 470 meV to 125 meV with increasing thickness from n equals 1 to 5. Based on this study we propose a general scaling law to determine the binding energy of excitons in perovskite quantum wells of any layer thickness.

AB - Ruddlesden-Popper halide perovskites are 2D solution-processed quantum wells with a general formula A2A' n-1M n X3n+1, where optoelectronic properties can be tuned by varying the perovskite layer thickness (n-value), and have recently emerged as efficient semiconductors with technologically relevant stability. However, fundamental questions concerning the nature of optical resonances (excitons or free carriers) and the exciton reduced mass, and their scaling with quantum well thickness, which are critical for designing efficient optoelectronic devices, remain unresolved. Here, using optical spectroscopy and 60-Tesla magneto-absorption supported by modeling, we unambiguously demonstrate that the optical resonances arise from tightly bound excitons with both exciton reduced masses and binding energies decreasing, respectively, from 0.221 m 0 to 0.186 m 0 and from 470 meV to 125 meV with increasing thickness from n equals 1 to 5. Based on this study we propose a general scaling law to determine the binding energy of excitons in perovskite quantum wells of any layer thickness.

UR - http://www.scopus.com/inward/record.url?scp=85048306847&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048306847&partnerID=8YFLogxK

U2 - 10.1038/s41467-018-04659-x

DO - 10.1038/s41467-018-04659-x

M3 - Article

C2 - 29884900

AN - SCOPUS:85048306847

VL - 9

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 2254

ER -