Improvement of third-order NLO properties of vacuum deposited Cd1-xPbxS nanostructured thin films for optoelectronic device applications

Bairy, Raghavendra; Vijeth, H.; Kulkarni, Suresh D.; Murari, M.S.; Kuruveri, Udaya Bhat

doi:10.1016/j.materresbull.2023.112146

Cited by 6 publications

(2 citation statements)

References 44 publications

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“…In comparison to thin films based on transparent conductive oxides, Zn 1-x Cd x S chalcogenide (ternary) films offer numerous advantages. Notably, physical vapor deposition (PVD) emerges as one of the simplest and most economical techniques to manufacture high-quality films characterized by exceptional uniformity [22]. Remarkably, there exists no prior report in the literature regarding the fabrication of Cd:ZnS through the thermal evaporation technique, specifically concerning its structural, linear optical, and NLO properties.…”

Section: Introductionmentioning

confidence: 99%

Enhanced optical third-harmonic generation in phase-engineered nanostructured Zn_1−xCd _x S thin films for optoelectronic device applications

Bairy,

Vijeth,

Rajesh

et al. 2024

J. Phys. D: Appl. Phys.

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A polycrystalline nanostructured thin film of zinc cadmium sulfide (ZnCdS) was meticulously fabricated on a glass substrate using the thermal evaporation method (PVD) within a vacuum chamber. Different doping concentrations were introduced by varying the cadmium (Cd) content, resulting in Zn1-xCdxS films with Cd concentrations ranging from x = 0.00 to 0.20 wt %. The impact of Cd doping on the third-order nonlinear optical (TONLO) properties of these films was thoroughly studied using the Z-scan method, employing a Diode-Pumped Solid-State (DPSS) CW laser. To gain insight into the structural characteristics, the Zn1-xCdxS thin films underwent analysis through X-ray diffraction. Optical studies confirmed the tunability of the optical band gap (Eg) in the Zn1-xCdxS films, ranging from 3.88 eV for undoped ZnS to 2.80 eV for the film fabricated with 20 wt. % of Cd-content. This significant reduction in 'Eg' renders the films highly suitable for use as absorbing layers in applications such as solar cells and optoelectronics. Surface morphology analysis, performed via Field Emission Scanning Electron Microscopy (FESEM), revealed noticeable alterations with increased Cd doping. Significantly, the doped films exhibited a substantial redshift in the band edge and an increase in transmittance within the visible and near-infrared regions. The investigation of TONLO properties, including the nonlinear absorption (NLA) coefficient (β), nonlinear refractive (NRI) index (n2) and susceptibility χ(3), yielded values ranging from 3.15 x 10-3 to 8.16 x 10-3 (cmW-1), 1.65 x 10-8 to 7.45 x 10-8 (cm2 W-1), and 3.12 x 10-5 to 7.86 x 10-5 (esu), respectively. These results indicate the presence of self-defocusing nonlinearity in the films. Overall, the outcomes underscore the potential of Cd-doped ZnS nanostructures in modifying surface morphology and enhancing NLO characteristics. Zn1-xCdxS thin films exhibit promise for applications in nonlinear optical devices, as evidenced by these encouraging findings.

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Section: Introductionmentioning

confidence: 99%

Enhanced optical third-harmonic generation in phase-engineered nanostructured Zn_1−xCd _x S thin films for optoelectronic device applications

Bairy,

Vijeth,

Rajesh

et al. 2024

J. Phys. D: Appl. Phys.

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“…Thin solid films consisting of semiconductor nanomaterials have received increasing attention for their potential applications, such as optoelectronic devices [1][2][3]. Among them, perovskite solar cells (PSCs) built from multi-semiconductor layers including halide perovskite light absorbers are now attracting widespread interest, in view of not only the intriguing basic science of related materials but also their commercialization [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Nanostructured Sn/Ti Oxide Hybrid Films with Terpineol/PEG-Based Nanofluids: Perovskite Solar Cell Applications

et al. 2023

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Tin oxide (SnO2) and titanium dioxide (TiO2) are recognized as attractive energy materials applicable for lead halide perovskite solar cells (PSCs). Sintering is one of the effective strategies for improving the carrier transport of semiconductor nanomaterials. Using the alternative metal-oxide-based ETL, nanoparticles are often used in a way that they are dispersed in a precursor liquid prior to their thin-film deposition. Currently, the creation of PSCs using nanostructured Sn/Ti oxide thin-film ETL is one of the topical issues for the development of high-efficiency PSCs. Here, we demonstrate the preparation of terpineol/PEG-based fluid containing both tin and titanium compounds that can be utilized for the formation of a hybrid Sn/Ti oxide ETL on a conductive substrate (F-doped SnO2 glass substrate: FTO). We also pay attention to the structural analysis of the Sn/Ti metal oxide formation at the nanoscale using a high-resolution transmission electron microscope (HR-TEM). The variation of the nanofluid composition, i.e., the concentration of tin and titanium sources, was examined to obtain a uniform transparent thin film by spin-coating and sintering processes. The maximum power conversion efficiency was obtained for the concentration condition of [SnCl2·2H2O]/[titanium tetraisopropoxide (TTIP)] = 25:75 in the terpineol/PEG-based precursor solution. Our method for preparing the ETL nanomaterials provides useful guidance for the creation of high-performance PSCs using the sintering method.

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Tailoring wide band gap PdS thin film doped with Cd ions using spin coating

et al. 2023

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Improvement of third-order NLO properties of vacuum deposited Cd1-xPbxS nanostructured thin films for optoelectronic device applications

Cited by 6 publications

References 44 publications

Enhanced optical third-harmonic generation in phase-engineered nanostructured Zn_1−xCd _x S thin films for optoelectronic device applications

Enhanced optical third-harmonic generation in phase-engineered nanostructured Zn_1−xCd _x S thin films for optoelectronic device applications

Preparation of Nanostructured Sn/Ti Oxide Hybrid Films with Terpineol/PEG-Based Nanofluids: Perovskite Solar Cell Applications

Tailoring wide band gap PdS thin film doped with Cd ions using spin coating

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Improvement of third-order NLO properties of vacuum deposited Cd1-xPbxS nanostructured thin films for optoelectronic device applications

Cited by 6 publications

References 44 publications

Enhanced optical third-harmonic generation in phase-engineered nanostructured Zn1−x Cd x S thin films for optoelectronic device applications

Enhanced optical third-harmonic generation in phase-engineered nanostructured Zn1−x Cd x S thin films for optoelectronic device applications

Preparation of Nanostructured Sn/Ti Oxide Hybrid Films with Terpineol/PEG-Based Nanofluids: Perovskite Solar Cell Applications

Tailoring wide band gap PdS thin film doped with Cd ions using spin coating

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Enhanced optical third-harmonic generation in phase-engineered nanostructured Zn_1−xCd _x S thin films for optoelectronic device applications

Enhanced optical third-harmonic generation in phase-engineered nanostructured Zn_1−xCd _x S thin films for optoelectronic device applications