TY - JOUR

T1 - Diffuse Reflectance Spectroscopy with Dilution: A Powerful Method for Halide Perovskites Study

AU - Мурзин, Алексей Олегович

AU - Самсонова, Анна Юрьевна

AU - Стомпос, Константинос

AU - Селиванов, Никита Иванович

AU - Емелин, Алексей Владимирович

AU - Капитонов, Юрий Владимирович

PY - 2023

Y1 - 2023

N2 - Halide perovskites and their low-dimensional analogs are promising semiconductor materials for solar cells, LEDs, lasers, detectors and other applications in the area of photonics. The most informative optical property of semiconductor photonics materials is the absorption spectrum enabling observation of the fundamental absorption edge, exciton structure, defect-related bands, etc. Traditionally, in the study of halide perovskites, this spectrum is obtained by absorption spectroscopy of thin films or diffuse reflectance spectroscopy of powders. The first method is applicable only to compounds with the developed thin film deposition technology, and in the second case, a large absorption coefficient narrows the observations down to the sample transparency region. In this paper, we suggest the diffuse reflectance spectroscopy with dilution as a method for obtaining the full-range absorption spectrum from halide perovskite powders, and demonstrate its application to practically important cases.

AB - Halide perovskites and their low-dimensional analogs are promising semiconductor materials for solar cells, LEDs, lasers, detectors and other applications in the area of photonics. The most informative optical property of semiconductor photonics materials is the absorption spectrum enabling observation of the fundamental absorption edge, exciton structure, defect-related bands, etc. Traditionally, in the study of halide perovskites, this spectrum is obtained by absorption spectroscopy of thin films or diffuse reflectance spectroscopy of powders. The first method is applicable only to compounds with the developed thin film deposition technology, and in the second case, a large absorption coefficient narrows the observations down to the sample transparency region. In this paper, we suggest the diffuse reflectance spectroscopy with dilution as a method for obtaining the full-range absorption spectrum from halide perovskite powders, and demonstrate its application to practically important cases.

KW - absorption

KW - diffuse reflectance spectroscopy

KW - excitons

KW - halide perovskites

UR - https://www.mendeley.com/catalogue/5e930a63-9d90-39d0-9ec3-5b1f21b39b4b/

U2 - 10.3390/molecules28010350

DO - 10.3390/molecules28010350

M3 - Article

C2 - 36615542

VL - 28

JO - Molecules

JF - Molecules

SN - 1420-3049

IS - 1

M1 - 350

ER -