Robust Free Excitons in CH3NH3PbI3 Halide Perovskite Revealed by Four-Wave Mixing

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Robust Free Excitons in CH3NH3PbI3 Halide Perovskite Revealed by Four-Wave Mixing. / Назаров, Роман Сергеевич ; Соловьев, Иван Александрович ; Мурзин, Алексей Олегович ; Селиванов, Никита Иванович; Гетс, Дмитрий; Макаров, Сергей; Стомпос, Константинос; Капитонов, Юрий Владимирович.

In: Advanced Optical Materials, Vol. 12, No. 15, 2303049, 28.05.2024.

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

BibTeX

@article{8f16b49154e245f99bafb23c8d0639c9,

title = "Robust Free Excitons in CH3NH3PbI3 Halide Perovskite Revealed by Four-Wave Mixing",

abstract = "Direct bandgap semiconductors possess a unique attribute: the presence of a free exciton state with a high total oscillator strength. This property makes them highly promising for applications in ultrafast optical signal processing and optical computing. One such protocol for optical computing is based on four-wave mixing (FWM). In this study, the nonlinear optical effect in polycrystalline thin films of halide perovskite MAPbI3 (MA+ = CH3NH (Formula presented.)) at low temperatures is demonstrated. Through analyzing the spectroscopy of the FWM signal, studying the photoluminescence excitation spectra, and comparing the findings with results from MAPbI3 single crystals, it has been discovered that the strongest nonlinear response is observed at the free exciton resonance and in the region of shallow defect states. Surprisingly, the presence of FWM in cross-linear excitation geometry has been observed, indicating potential involvement of other nonlinear or many-body effects. The observations of FWM with free excitons even in highly defective MAPbI3 thin films demonstrate the robustness of the exciton resonance and highlight the practical prospects for utilizing this material in optical computing.",

keywords = "PLE spectroscopy, exciton, four-wave mixing, halide perovskites, photoluminescence excitation",

author = "Назаров, {Роман Сергеевич} and Соловьев, {Иван Александрович} and Мурзин, {Алексей Олегович} and Селиванов, {Никита Иванович} and Дмитрий Гетс and Сергей Макаров and Константинос Стомпос and Капитонов, {Юрий Владимирович}",

year = "2024",

month = may,

day = "28",

doi = "10.1002/adom.202303049",

language = "English",

volume = "12",

journal = "Advanced Optical Materials",

issn = "2195-1071",

publisher = "Wiley-Blackwell",

number = "15",

}

RIS

TY - JOUR

T1 - Robust Free Excitons in CH3NH3PbI3 Halide Perovskite Revealed by Four-Wave Mixing

AU - Назаров, Роман Сергеевич

AU - Соловьев, Иван Александрович

AU - Мурзин, Алексей Олегович

AU - Селиванов, Никита Иванович

AU - Гетс, Дмитрий

AU - Макаров, Сергей

AU - Стомпос, Константинос

AU - Капитонов, Юрий Владимирович

PY - 2024/5/28

Y1 - 2024/5/28

N2 - Direct bandgap semiconductors possess a unique attribute: the presence of a free exciton state with a high total oscillator strength. This property makes them highly promising for applications in ultrafast optical signal processing and optical computing. One such protocol for optical computing is based on four-wave mixing (FWM). In this study, the nonlinear optical effect in polycrystalline thin films of halide perovskite MAPbI3 (MA+ = CH3NH (Formula presented.)) at low temperatures is demonstrated. Through analyzing the spectroscopy of the FWM signal, studying the photoluminescence excitation spectra, and comparing the findings with results from MAPbI3 single crystals, it has been discovered that the strongest nonlinear response is observed at the free exciton resonance and in the region of shallow defect states. Surprisingly, the presence of FWM in cross-linear excitation geometry has been observed, indicating potential involvement of other nonlinear or many-body effects. The observations of FWM with free excitons even in highly defective MAPbI3 thin films demonstrate the robustness of the exciton resonance and highlight the practical prospects for utilizing this material in optical computing.

AB - Direct bandgap semiconductors possess a unique attribute: the presence of a free exciton state with a high total oscillator strength. This property makes them highly promising for applications in ultrafast optical signal processing and optical computing. One such protocol for optical computing is based on four-wave mixing (FWM). In this study, the nonlinear optical effect in polycrystalline thin films of halide perovskite MAPbI3 (MA+ = CH3NH (Formula presented.)) at low temperatures is demonstrated. Through analyzing the spectroscopy of the FWM signal, studying the photoluminescence excitation spectra, and comparing the findings with results from MAPbI3 single crystals, it has been discovered that the strongest nonlinear response is observed at the free exciton resonance and in the region of shallow defect states. Surprisingly, the presence of FWM in cross-linear excitation geometry has been observed, indicating potential involvement of other nonlinear or many-body effects. The observations of FWM with free excitons even in highly defective MAPbI3 thin films demonstrate the robustness of the exciton resonance and highlight the practical prospects for utilizing this material in optical computing.

KW - PLE spectroscopy

KW - exciton

KW - four-wave mixing

KW - halide perovskites

KW - photoluminescence excitation

UR - https://www.mendeley.com/catalogue/bad91b49-63e4-381c-9283-b2dd2bf0e0dd/

U2 - 10.1002/adom.202303049

DO - 10.1002/adom.202303049

M3 - Article

VL - 12

JO - Advanced Optical Materials

JF - Advanced Optical Materials

SN - 2195-1071

IS - 15

M1 - 2303049

ER -

ID: 119205376