The exciton absorption spectrum of thin films of ternary compounds in the AgBr–PbBr2 system

2018 ◽  
Vol 44 (8) ◽  
pp. 856-859
Author(s):  
E. N. Kovalenko ◽  
O. N. Yunakova ◽  
N. N. Yunakov
Keyword(s):  
Thin Films ◽  
Absorption Spectrum ◽  
Exciton Absorption ◽  
Ternary Compounds

scholarly journals Exciton absorption spectrum of Cs4PbCl6 thin films

2015 ◽  
Vol 22 (2) ◽  
pp. 175-180 ◽  
Author(s):  
O.N. Yunakova ◽  
Keyword(s):  
Thin Films ◽  
Absorption Spectrum ◽  
Exciton Absorption

Exciton absorption spectra of thin films of RbCu2Cl3 and Rb2Cu3Cl5 ternary compounds

2021 ◽  
Vol 47 (5) ◽  
pp. 427-432
Author(s):  
E. N. Kovalenko ◽  
O. N. Yunakova ◽  
N. N. Yunakov
Keyword(s):  
Thin Films ◽  
Absorption Spectra ◽  
Exciton Absorption ◽  
Ternary Compounds

The exciton absorption spectrum of KPbI3 thin films

2014 ◽  
Vol 116 (1) ◽  
pp. 68-71 ◽  
Author(s):  
O. N. Yunakova ◽  
V. K. Miloslavsky ◽  
E. N. Kovalenko
Keyword(s):  
Thin Films ◽  
Absorption Spectrum ◽  
Exciton Absorption

Tailoring the optical properties of tin oxide thin films via gamma irradiation

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ateyyah M. Al-Baradi ◽  
Ahmed A. Atta ◽  
Ali Badawi ◽  
Saud A. Algarni ◽  
Abdulraheem S. A. Almalki ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Absorption Spectrum ◽  
Gamma Irradiation ◽  
Tin Oxide ◽  
Free Charge Carrier ◽  
Oxide Thin Films ◽  
Dispersion Parameters ◽  
Absorption Spectrum Fitting ◽  
Spectrum Fitting

Abstract In the current work, the optical properties of tin oxide thin films have been tailored via gamma irradiation for energy applications. The effect of Gamma radiation (50, 100, 150, 200 and 250 kGy) on the microstructural, absorption and oscillator parameters of SnO2 thin films has been investigated. XRD results reveal that the SnO2 films have the symmetry of the space group P42/mnm belonging to the tetragonal system. The crystallite size of γ-irradiated SnO2 thin film slightly increases as the irradiation dose increases. The allowed optical band gaps are estimated by applying various methods such as Tauc’s method, derivation of absorption spectrum fitting and absorption spectrum fitting approaches. The dispersion parameters are extracted from the dispersion curve of the real part of the refractive index. The single-effective-oscillator and Drude models for free charge carrier absorption are applied to obtain the dispersion parameters before and after γ-irradiation.

CuxSbySz THIN FILMS PRODUCED BY ANNEALING CHEMICALLY DEPOSITED Sb2S3-CuS THIN FILMS

2001 ◽  
Vol 15 (17n19) ◽  
pp. 667-670 ◽  
Author(s):  
Y. RODRÍGUEZ-LAZCANO ◽  
M. T. S. NAIR ◽  
P. K. NAIR
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Optical Band Gap ◽  
Deposition Method ◽  
Photovoltaic Devices ◽  
Large Area ◽  
Electrical And Optical Properties ◽  
Ternary Compounds ◽  
Glass Substrates ◽  
Different Temperatures

The possibility of generating ternary compounds through annealing thin film stacks of binary composition has been demonstrated before. In this work we report a method to produce large area coating of ternary compounds through a reaction in solid state between thin films of Sb2S3 and CuS. Thin films of Sb2S3 -CuS were deposited on glass substrates in the sequence of Sb2S3 followed by CuS (on Sb2S3 ) using chemical bath deposition method. The multilayer stack, thus produced, of approximately 0.5 μm in thickness, where annealed under nitrogen and argon atmospheres at different temperatures to produce films of ternary composition, CuxSbySz . An optical band gap of ~1.5 eV was observed in these films, suggesting that the thin films of ternary composition formed in this way are suitable for use as absorber materials in photovoltaic devices. The results on the analyses of structural, electrical and optical properties of films formed with different combinations of thickness in the multilayers will be discussed in the paper.

Thickness dependence of transient absorption spectrum for InGaN thin films

2003 ◽  
Vol 0 (7) ◽  
pp. 2606-2609
Author(s):  
M.-S. Nomura ◽  
M. Arita ◽  
S. Ashihara ◽  
S. Kako ◽  
M. Nishioka ◽  
...  
Keyword(s):  
Thin Films ◽  
Absorption Spectrum ◽  
Transient Absorption ◽  
Thickness Dependence ◽  
Transient Absorption Spectrum

Preparation and Properties of CuInS2 Thin-Film by Successive Ionic Layer Adsorption and Reaction (SILAR) Method

2007 ◽  
Vol 280-283 ◽  
pp. 877-880
Author(s):  
Zheng Guo Jin ◽  
Yong Shi ◽  
Ji Jun Qiu ◽  
Xiao Xin Liu
Keyword(s):  
Thin Films ◽  
Absorption Spectrum ◽  
Optical Absorption ◽  
Optical Absorption Spectrum ◽  
Photoelectron Spectra ◽  
Molar Ratio ◽  
Silar Method ◽  
X Ray ◽  
Cuins2 Thin Films ◽  
Ionic Layer

CuInS2 thin films were deposited on galss substrate by successive ionic layer absorption and reaction (SILAR) method at room temperature. CuCl2, InCl3, and Na2S were used as precursor materials. The thin films were obtained during the dipping of 20-40 cycles and after annealing in the N2 atmosphere at 500°C. The characterization of the film was carried out by X-ray diffraction, scanning electron microscopy, optical absorption spectrum and X-ray photoelectron spectra. Quantification of the XPS peaks shows that the molar ratio of Cu:In:S of the film is close to the stoichiometry of CuInS2. XRD result demonstrated that the formed compound is CuInS2 with chalcopyrites crystal structure. Direct band gap was found to be 1.5eV from optical absorption spectrum.

Two-photon absorption spectrum of 3-butoxycarbonylmethylurethane polydiacetylene thin films

1998 ◽  
Vol 108 (10) ◽  
pp. 4319-4323 ◽  
Author(s):  
GianPiero Banfi ◽  
Davide Fortusini ◽  
Paolo Dainesi ◽  
Daniela Grando ◽  
Stefano Sottini
Keyword(s):  
Thin Films ◽  
Absorption Spectrum ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon
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