Size-And Wavelength-Dependent Two-Photon Absorption Cross-Section of CsPbBr3 Perovskite Quantum Dots

Junsheng Chen; Karel Žídek; Pavel Chábera; Dongzhou Liu; Pengfei Cheng; Lauri Nuuttila; Mohammed J. Al-Marri; Heli Lehtivuori; Maria E. Messing; Keli Han; Kaibo Zheng; Tõnu Pullerits

doi:10.1021/acs.jpclett.7b00613

Size-And Wavelength-Dependent Two-Photon Absorption Cross-Section of CsPbBr₃ Perovskite Quantum Dots

Junsheng Chen, Karel Žídek, Pavel Chábera, Dongzhou Liu, Pengfei Cheng, Lauri Nuuttila, Mohammed J. Al-Marri, Heli Lehtivuori, Maria E. Messing, Keli Han^*, Kaibo Zheng, Tõnu Pullerits

^*Corresponding author for this work

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

191 Citations (Scopus)

Abstract

All-inorganic colloidal perovskite quantum dots (QDs) based on cesium, lead, and halide have recently emerged as promising light emitting materials. CsPbBr₃ QDs have also been demonstrated as stable two-photon-pumped lasing medium. However, the reported two photon absorption (TPA) cross sections for these QDs differ by an order of magnitude. Here we present an in-depth study of the TPA properties of CsPbBr₃ QDs with mean size ranging from 4.6 to 11.4 nm. By using femtosecond transient absorption (TA) spectroscopy we found that TPA cross section is proportional to the linear one photon absorption. The TPA cross section follows a power law dependence on QDs size with exponent 3.3 ± 0.2. The empirically obtained power-law dependence suggests that the TPA process through a virtual state populates exciton band states. The revealed power-law dependence and the understanding of TPA process are important for developing high performance nonlinear optical devices based on CsPbBr₃ nanocrystals.

Original language	English
Journal	Journal of Physical Chemistry Letters
Volume	8
Issue number	10
Pages (from-to)	2316-2321
Number of pages	6
ISSN	1948-7185
DOIs	https://doi.org/10.1021/acs.jpclett.7b00613
Publication status	Published - 18 May 2017
Externally published	Yes

Bibliographical note

Funding Information:
This work was financed by the Swedish Research Council (VR) the Knut and Alice Wallenberg Foundation, and NPRP Grant # NPRP7-227-1-034 from the Qatar National Research Fund, Interreg Oresund-Kattegat-Skagerrak European regional development fund, and the Program of Study Abroad for Young Teachers by the Agricultural University of Hebei. Keli Han thanks the support from the National Natural Science Foundation of China (Grant No: 21533010).

Publisher Copyright:
© 2017 American Chemical Society.

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@article{5ecee6f7558444879c8bf3ffa9666fca,

title = "Size-And Wavelength-Dependent Two-Photon Absorption Cross-Section of CsPbBr3 Perovskite Quantum Dots",

abstract = "All-inorganic colloidal perovskite quantum dots (QDs) based on cesium, lead, and halide have recently emerged as promising light emitting materials. CsPbBr3 QDs have also been demonstrated as stable two-photon-pumped lasing medium. However, the reported two photon absorption (TPA) cross sections for these QDs differ by an order of magnitude. Here we present an in-depth study of the TPA properties of CsPbBr3 QDs with mean size ranging from 4.6 to 11.4 nm. By using femtosecond transient absorption (TA) spectroscopy we found that TPA cross section is proportional to the linear one photon absorption. The TPA cross section follows a power law dependence on QDs size with exponent 3.3 ± 0.2. The empirically obtained power-law dependence suggests that the TPA process through a virtual state populates exciton band states. The revealed power-law dependence and the understanding of TPA process are important for developing high performance nonlinear optical devices based on CsPbBr3 nanocrystals.",

author = "Junsheng Chen and Karel {\v Z}{\'i}dek and Pavel Ch{\'a}bera and Dongzhou Liu and Pengfei Cheng and Lauri Nuuttila and Al-Marri, {Mohammed J.} and Heli Lehtivuori and Messing, {Maria E.} and Keli Han and Kaibo Zheng and T{\~o}nu Pullerits",

note = "Funding Information: This work was financed by the Swedish Research Council (VR) the Knut and Alice Wallenberg Foundation, and NPRP Grant # NPRP7-227-1-034 from the Qatar National Research Fund, Interreg Oresund-Kattegat-Skagerrak European regional development fund, and the Program of Study Abroad for Young Teachers by the Agricultural University of Hebei. Keli Han thanks the support from the National Natural Science Foundation of China (Grant No: 21533010). Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

month = may,

day = "18",

doi = "10.1021/acs.jpclett.7b00613",

language = "English",

volume = "8",

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journal = "Journal of Physical Chemistry Letters",

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T1 - Size-And Wavelength-Dependent Two-Photon Absorption Cross-Section of CsPbBr3 Perovskite Quantum Dots

AU - Chen, Junsheng

AU - Žídek, Karel

AU - Chábera, Pavel

AU - Liu, Dongzhou

AU - Cheng, Pengfei

AU - Nuuttila, Lauri

AU - Al-Marri, Mohammed J.

AU - Lehtivuori, Heli

AU - Messing, Maria E.

AU - Han, Keli

AU - Zheng, Kaibo

AU - Pullerits, Tõnu

N1 - Funding Information: This work was financed by the Swedish Research Council (VR) the Knut and Alice Wallenberg Foundation, and NPRP Grant # NPRP7-227-1-034 from the Qatar National Research Fund, Interreg Oresund-Kattegat-Skagerrak European regional development fund, and the Program of Study Abroad for Young Teachers by the Agricultural University of Hebei. Keli Han thanks the support from the National Natural Science Foundation of China (Grant No: 21533010). Publisher Copyright: © 2017 American Chemical Society.

PY - 2017/5/18

Y1 - 2017/5/18

N2 - All-inorganic colloidal perovskite quantum dots (QDs) based on cesium, lead, and halide have recently emerged as promising light emitting materials. CsPbBr3 QDs have also been demonstrated as stable two-photon-pumped lasing medium. However, the reported two photon absorption (TPA) cross sections for these QDs differ by an order of magnitude. Here we present an in-depth study of the TPA properties of CsPbBr3 QDs with mean size ranging from 4.6 to 11.4 nm. By using femtosecond transient absorption (TA) spectroscopy we found that TPA cross section is proportional to the linear one photon absorption. The TPA cross section follows a power law dependence on QDs size with exponent 3.3 ± 0.2. The empirically obtained power-law dependence suggests that the TPA process through a virtual state populates exciton band states. The revealed power-law dependence and the understanding of TPA process are important for developing high performance nonlinear optical devices based on CsPbBr3 nanocrystals.

AB - All-inorganic colloidal perovskite quantum dots (QDs) based on cesium, lead, and halide have recently emerged as promising light emitting materials. CsPbBr3 QDs have also been demonstrated as stable two-photon-pumped lasing medium. However, the reported two photon absorption (TPA) cross sections for these QDs differ by an order of magnitude. Here we present an in-depth study of the TPA properties of CsPbBr3 QDs with mean size ranging from 4.6 to 11.4 nm. By using femtosecond transient absorption (TA) spectroscopy we found that TPA cross section is proportional to the linear one photon absorption. The TPA cross section follows a power law dependence on QDs size with exponent 3.3 ± 0.2. The empirically obtained power-law dependence suggests that the TPA process through a virtual state populates exciton band states. The revealed power-law dependence and the understanding of TPA process are important for developing high performance nonlinear optical devices based on CsPbBr3 nanocrystals.

U2 - 10.1021/acs.jpclett.7b00613

DO - 10.1021/acs.jpclett.7b00613

M3 - Letter

C2 - 28480702

AN - SCOPUS:85019354037

SN - 1948-7185

VL - 8

SP - 2316

EP - 2321

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 10

ER -