Effects of annealing on properties of ZnO thin films prepared by electrochemical deposition in chloride medium

Lupan, Oleg; Pauporté, Thierry; Chow, Lee; Viana, Bruno; Pellé, F.; Ono, Luis K.; Cuenya, Beatriz Roldán; Heinrich, Helge

doi:10.1016/j.apsusc.2009.10.032

Cited by 438 publications

(248 citation statements)

References 85 publications

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“…A 1 and E 1 modes are polar and split into TO-transverse optical and LO-longitudinal optical components. 35 The E 2 modes are Raman active only. The B 1 modes are infrared and Raman inactive or silent modes.…”

Section: Resultsmentioning

confidence: 99%

Fast and low temperature growth of electron transport layers for efficient perovskite solar cells

et al. 2015

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We describe a fast, simple and low temperature electrochemical technique for the preparation of zinc oxide layers on rigid and flexible substrates. The layers, prepared from a zinc nitrate precursor, are of high structural and optical quality. They have been optimized to be applied as efficient electron transport layers in CH 3 NH 3 PbI 3 -sensitized perovskite solar cells (PSCs). We show that an electrodeposition time of only two minutes and a low processing temperature are sufficient to fabricate solar cells with a power conversion efficiency close to 11%, with a high short circuit current and a small J-V curve hysteresis. The key parameters of the cell functioning have been analyzed over a large applied voltage range by the impedance spectroscopy technique. The solar cell characteristic changes with the ZnO layer deposition time are explained by the variation of the recombination and charge transfer resistances.

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Section: Resultsmentioning

confidence: 99%

Fast and low temperature growth of electron transport layers for efficient perovskite solar cells

et al. 2015

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“…Thin films of TiO 2 and ZnO can be deposited by a variety of physical and chemical technologies such as magnetron sputtering, CVD and electrochemical method [11][12][13]. The Sol-gel route is a wet-chemical deposition suitable for fabrication of thin films, ceramics, fibers and nanocomposites [14,15].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of ZnO–TiO2 films obtained by sol-gel method

Ivanova

Harizanova

Koutzarova

et al. 2011

Journal of Non-Crystalline Solids

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The sol-gel route has been applied to obtain ZnO-TiO 2 thin films. For comparison, pure TiO 2 and ZnO films are also prepared from the corresponding solutions. The films are deposited by a spin-coated method on silicon and glass substrates. Their structural and vibrational properties have been studied as a function of the annealing temperatures (400-750 °C). Pure ZnO films crystallize in a wurtzite modification at a relatively low temperature of 400 °C, whereas the mixed oxide films show predominantly amorphous structure at this temperature. XRD analysis shows that by increasing the annealing temperatures, the sol-gel Zn/Ti oxide films reveal a certain degree of crystallization and their structures are found to be mixtures of wurtzite ZnO, Zn 2 TiO 4 , anatase TiO 2 and amorphous fraction. The XRD analysis presumes that Zn 2 TiO 4 becomes a favored phase at the highest annealing temperature of 750 °C. The obtained thin films are uniform with no visual defects. The optical properties of ZnO-TiO 2 films have been compared with those of single component films (ZnO and TiO 2 ). The mixed oxide films present a high transparency with a slight decrease by increasing the annealing temperature.

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“…In the literature such defects have been ascribed to various processes such as oxygen vacancy (V O ), interstitial zinc (Zn i ), singly ionized oxygen vacancy (V + O ), antisite oxygen (O Zn ), zinc vacancy (V Zn ) and even oxygen interstitial (O i ) [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Attempts have been made to design ZnO at the nanoscale as a means to engineer its optoelectronic properties [12][13][14][15][16][17]. Changes in physico-chemical environment of Zn in these nanoparticles or nanocomposites are considered to be the major cause of white light emission in ZnO [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effect of [OH^–] Linkages on Luminescent Properties of ZnO Nanoparticles

et al. 2011

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Abstract. Optical properties of ZnO nanoparticles prepared from a simple chemical method using sodium zincate bath show strong white light emission. X-ray absorption fine structure studies reveal a completely different local environment around Zn in these ZnO nanoparticles. The observed luminescence properties and local structural changes have been explained on the basis of a linkage between Zn and OH -ions in the surface layers of ZnO nanoparticles.

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Effects of annealing on properties of ZnO thin films prepared by electrochemical deposition in chloride medium

Cited by 438 publications

References 85 publications

Fast and low temperature growth of electron transport layers for efficient perovskite solar cells

Fast and low temperature growth of electron transport layers for efficient perovskite solar cells

Preparation and characterization of ZnO–TiO2 films obtained by sol-gel method

Effect of [OH^–] Linkages on Luminescent Properties of ZnO Nanoparticles

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Effects of annealing on properties of ZnO thin films prepared by electrochemical deposition in chloride medium

Cited by 438 publications

References 85 publications

Fast and low temperature growth of electron transport layers for efficient perovskite solar cells

Fast and low temperature growth of electron transport layers for efficient perovskite solar cells

Preparation and characterization of ZnO–TiO2 films obtained by sol-gel method

Effect of [OH–] Linkages on Luminescent Properties of ZnO Nanoparticles

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Effect of [OH^–] Linkages on Luminescent Properties of ZnO Nanoparticles