Growth and characterization of Sb^sub 2^Se^sub 3^ thin films for solar cells

The growth of antimony selenide (Sb2Se3) thin films the first time by atmospheric pressure chemical molecular beam deposition (CMBD) method has been reported. The morphological and structural properties of the films were studied as a function of the hydrogen flow rate at different substrate temperat...

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Bibliographic Details
Published in:Solar energy 2018-10, Vol.173, p.225
Main Authors: Razykov, TM, Shukurov, AX, Atabayev, OK, Kuchkarov, KM, Ergashev, B, Mavlonov, AA
Format: Article
Language:English
Subjects:
Absorptivity
Amorphous structure
Antimony
Antimony compounds
Electrical resistivity
Fabrication
Flow rates
Flow velocity
Hydrogen
Molecular beams
Morphology
Optical measurement
Organic chemistry
Photovoltaic cells
Polycrystals
Selenide
Selenides
Selenium
Solar cells
Solar energy
Substrates
Temperature
Thin films
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Summary:The growth of antimony selenide (Sb2Se3) thin films the first time by atmospheric pressure chemical molecular beam deposition (CMBD) method has been reported. The morphological and structural properties of the films were studied as a function of the hydrogen flow rate at different substrate temperature. Experimental data indicate that Sb2Se3 films grown as Se-rich at low hydrogen flow rate and the samples have almost amorphous structure. In contrast, at higher hydrogen flow rate, the films have Sb-rich composition and polycrystalline structure. Interestingly, transition from amorphous to polycrystalline structure is depend on the flow rate of the transport gas, while surface morphology affected by the substrate temperature. Electrical and optical measurements revealed that polycrystalline films have p-type conductivity and optical bandgap of 1.1 eV with high absorption coefficient of 105 cm−1. These results showed that the CMBD grown films can be used as absorber layer for fabrication of thin film solar cells.
ISSN:0038-092X
1471-1257
DOI:10.1016/j.solener.2018.07.082