Influences of indium doping and annealing on microstructure and optical properties of cadmium oxide thin films

Zhu, Yuankun; Lei, Pei; Zhu, Jiaqi; Han, Jiecai

doi:10.1007/s00339-016-9917-x

Cited by 10 publications

(3 citation statements)

References 37 publications

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“…a decreased energy penalty for formation of oxygen vacancies. 44 This rationale follows for first row transition metal perovskite chemistries such as AMnO3 47,48 and ANiO3, [49][50][51] where experimental and theoretical work has correlated an increase in oxygen vacancy concentration in NdNiO3 and SmNiO3 epitaxial thin films and LaNiO3-δ polycrystalline films 52 with increasing biaxial tensile strain. [49][50][51] Further, the strain response of vacancy formation energy in perovskites can be quantified as a quadratic function of strain, with terms contributed by both the changes in volume and elastic constants associated with the creation of vacancies, 53 linking the structural effects of strain with chemical ionic properties in perovskite oxides.…”

Section: Bulk Defect Energeticsmentioning

confidence: 99%

Tuning perovskite oxides by strain: Electronic structure, properties, and functions in (electro)catalysis and ferroelectricity

et al. 2019

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Section: Bulk Defect Energeticsmentioning

confidence: 99%

Tuning perovskite oxides by strain: Electronic structure, properties, and functions in (electro)catalysis and ferroelectricity

et al. 2019

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“…The peaks around 444.6 and 452.1 eV correspond to the In element. The chemical shifts of In 3d indicate that the In element is doped into the CdO lattice by replacing the Cd atoms . The features of the O 1s spectrum of ICO NPs with the In 3+ doping contents of 0.125, 0.075, and 0 are shown in Figure D–F, respectively.…”

Section: Resultsmentioning

confidence: 96%

Surface-Enhanced Raman Scattering (SERS) on Indium-Doped CdO (ICO) Substrates: A New Charge-Transfer Enhancement Contribution from Electrons in Conduction Bands

Zhang

Wang

et al. 2021

J. Phys. Chem. C

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Surface-enhanced Raman scattering (SERS) substrates have shown rapid development in recent years, but the use of transparent conductive oxides (TCOs) in SERS is still limited. Here, a series of In-doped CdO (ICO) NPs with different In 3+ doping contents x (x = 0, 0.025, 0.050, 0.075, 0.100, 0.125, 0.150, and 0.200) were synthesized by a hydrothermal method and first employed as a SERS platform. The structures and properties of the ICO NPs influenced by dopant concentration of In 3+ ions were characterized by powder X-ray diffraction (XRD), inductively coupled plasma (ICP) analysis, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR) spectroscopy. Furthermore, the SERS spectra of ICO-MPY were investigated. Interestingly, the enhancement was dominated by the charge-transfer (CT) contribution through the free electrons in conduction bands (CBs). The changes in electronic distributions in energy levels of ICO NPs at different doping contents were explored, and the corresponding effect on SERS was discussed by employing 633 and 785 nm excitation lines, respectively. The CT route was found to be the excitation of electrons from CBs of semiconductor to the LUMO of molecule, which provides a new perspective in understanding SERS mechanisms. The present work provides a new approach to develop potential semiconductive SERS substrates.

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“…Saydam iletken oksit malzemeler, çeşitli teknolojik uygulamalardaki kullanım imkânları nedeniyle pek çok araştırmacı tarafından yoğun olarak incelenmiştir [1][2][3]. Bu malzemeler arasında Kadmiyum oksit (CdO) bir n-tipi yarıiletken olup oda sıcaklığında yaklaşık ∼2.2 eV direkt bant aralık değerine sahiptir [4].…”

Section: Introductionunclassified

Farklı Oranlarda Tiyoüre Katkısının Nanoyapılı Kadmiyum Oksit (CdO) Filmlerin Fiziksel Özellikleri Üzerine Etkisinin İncelenmesi

Aydın¹,

Şahin²

2017

SDÜ Fen Bil Enst Der

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Özet: Bu çalışmanın amacı nanoyapılı CdO filmlerin fiziksel özelliklerine tiyoüre konsantrasyonunun etkisini incelemektir. Bunun için farklı tiyoüre konsantrasyonlarındaki (%0, 0.5, 1 ve 2) dört seri CdO film soda lime cam altlık üzerine SILAR tekniği kullanılarak büyütüldü. Bu filmlerin morfolojileri, kristal yapıları ve optik özellikleri sırasıyla MM, XRD ve UV-visible spektroskopi teknikleri ile karakterize edilmiştir. MM görüntüleri tiyoüre konsantrasyonunun nanoyapılı CdO filmlerin yüzey morfolojilerini etkilediğini göstermektedir. CdO filmlerinin düzlemlerinin tercihli yöneliminin tiyoüre konsantrasyon değerine kuvvetle bağlı olduğunu XRD analizinden elde edilen sonuçlar ortaya koymaktadır. UV-vis analizinden, tiyoüre miktarı arttıkça CdO filmlerinin optik enerji bant aralığının (Eg) önce azaldığı ve daha sonra tekrar artan konsantrasyonla arttığı belirlenmiş ve bu enerji değerlerinin (2.25 -2.13) eV aralığında olduğu bulunmuştur. Investigation of Effect of Thiourea Addition in Different Rates on the Physical Properties of Nanostructured Cadmium Oxide (CdO) FilmsKeywords Cadmium Oxide (CdO), Thiourea, SILAR, SurfactantAbstract: The purpose of this study is to investigate the influence of thiourea concentration on physical properties of the nanostructured CdO films. Four series CdO films were deposited on soda lime glass substrate by using SILAR technique at different Thiourea concentrations of 0, 0.5, 1 and 2%. The morphologies, crystal structures and optical properties of these films have been characterized using MM, XRD, and UV-visible spectroscopy. From the MM images showed that thiourea concentration influence the morphologies of the nanostructures. The results obtained from XRD analysis showed that the growth preferred orientation of the CdO films strongly depend on thiourea concentrations value. From UV-vis analysis it was found that the optical energy band gap (Eg) of the CdO films changes with the amount of thiourea and it was in the range of (2.25 -2.13) eV.

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Influences of indium doping and annealing on microstructure and optical properties of cadmium oxide thin films

Cited by 10 publications

References 37 publications

Tuning perovskite oxides by strain: Electronic structure, properties, and functions in (electro)catalysis and ferroelectricity

Tuning perovskite oxides by strain: Electronic structure, properties, and functions in (electro)catalysis and ferroelectricity

Surface-Enhanced Raman Scattering (SERS) on Indium-Doped CdO (ICO) Substrates: A New Charge-Transfer Enhancement Contribution from Electrons in Conduction Bands

Farklı Oranlarda Tiyoüre Katkısının Nanoyapılı Kadmiyum Oksit (CdO) Filmlerin Fiziksel Özellikleri Üzerine Etkisinin İncelenmesi

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