Optimization of erbium percentage molarity on cobalt selenide semiconductor material via spray pyrolysis deposition technique for photovoltaic application

Ikhioya, Imosobomeh L.; Udeze, C.U.; Ochai-Ejeh, Faith U.; Ahmed, Ishaq; Maaza, M.; Ezema, Fabian I.

doi:10.1016/j.jics.2022.100793

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…The selenide material of interest in this research study is the cobalt selenide (CoSe) material which fits into group II-VI of the periodic table. The unique feature of this semiconducting nanomaterial such as optimal band gap of 1.5 eV which conforms with the optimum of the special region, a high conductivity and strong absorption coefficient 10 5 cm -1 makes it a suitable material for use as a photovoltaic device [14,17].…”

Section: Introductionmentioning

confidence: 84%

“…Numerous researches have been carried out on the deposition, characterization and possible application of metal selenides such as CdSe, CuSe, CoSe, ZnSe, SnSe [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Generally, selenide nano materials have been instrumental in production of photovoltaic, electronics and optoelectronic devices such as laser materials, LEDs, sensors, diodes, transistors, solar cells etc [3,5,[14][15][16]. The selenide material of interest in this research study is the cobalt selenide (CoSe) material which fits into group II-VI of the periodic table.…”

Section: Introductionmentioning

confidence: 99%

“…To enhance the performance of CoSe nano material several researchers have used the doping technique to make nano materials of Yb:CoSe [5,15], CoSe.MoSe [13], Er:CoSe [3,14], Zr:CoSe [16] prepared using several deposition techniques such as Spray pyrolysis, Electrodeposition, Chemical bath, SILAR [16][17][18][19][20][21][22][23][24]. Imosobomeh et al investigated the impact of temperature on spray synthesized CoSe doped with Zr [16].…”

Section: Introductionmentioning

confidence: 99%

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Impact of temperature difference on the features of spray deposited yttrium doped cobalt selenide (YCoSe) thin films for photovoltaic application

Akpu,

Okpechi,

Elizabeth

et al. 2023

Afr. Sci. Rep.

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In this investigation, spray deposited yttrium doped cobalt selenide (YCoSe) thin materials were synthesized in soda lime glass and the impact of substrate temperature (140 oC, 160 oC, 180 oC and 200 oC) on their elemental composition, surface morphology, structural, electrical and optical properties were investigated using scanning electron microscopy-SEM X-ray diffraction –XRD, four-point probe and UV-VIS spectrophotometer respectively. The EDX plots of the deposited undoped and Y-doped cobalt selenide revealed the major elements: cobalt, selenium and yttrium. This confirms the deposition of CoSe and Y-doped CoSe thin materials. The morphology of undoped CoSe thin materials was very rough containing randomly oriented non-uniform thin particles while addition of Y dopant (0.1 mol%) at substrate temperature of 140 oC gave a homogenous distribution of compact rectangular-like nanograins. The XRD result shows that the films are cubic polycrystalline in nature and the film grown at substrate temperature of 180 oC was seen to give the most excellent crystalline quality and a preferential orientation along (111) direction. From electrical results it was observed that increase in substrate temperature increased the film thickness with decreased resistivity and increased conductivity. The optical properties were found to vary with substrate temperature despite the fact that the variation was not totally linear, as the film deposited at substrate temperature of 160 oC deviated from the linearity in all the optical properties. The energy band gap of the deposited samples ranges from 1.25 eV–1.75 eV. The materials produced could be used in the production of photovoltaic devices.

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Section: Introductionmentioning

confidence: 84%