Hydrothermal synthesis and characterization of CuCrO2 laminar nanocrystals

Zhou, Shu; Fang, Xin; Deng, Zanhong; Li, Da; Dong, Wen‐Kui; Tao, Ruhua; Meng, Gang; Wang, Tao; Zhu, Xuebin

doi:10.1016/j.jcrysgro.2008.09.193

Cited by 52 publications

(35 citation statements)

References 32 publications

(37 reference statements)

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“…Overall the recent optical measurements have found the direct optical bandgap to be in the range of 2.95-3.30 eV estimating CuCrO2 to be transparent to visible light. 20,21,22,23,24,25 It should also be mentioned that besides the TCO applications, CuCrO2 has attracted attention for a range of other applications, ranging from catalysis 26,27,28 and sensors 29,30 to thermoelectrics, 31,32,33 photocatalysis and removal of various hazardous gases 34,35 metal cations. 36 There are many methods available for the preparation of CuCrO2 thin films and coatings, such as reactive sputtering deposition, 37,38 pulsed laser deposition, 39,40,41,42 chemical solution deposition, 43,44,45,46 and molecular beam epitaxy.…”

Section: Introductionmentioning

confidence: 99%

Atomic layer deposition of transparent semiconducting oxide CuCrO₂ thin films

2015

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Atomic layer deposition (ALD) is a vital gas-phase technique for atomic-level thickness-controlled deposition of high-quality thin films on various substrate morphologies owing to its self-limiting gas-surface reaction mechanism. Here we report the ALD fabrication of thin films of the semiconducting CuCrO2 oxide that is a highly prospective candidate for transparent electronics applications. In our process, copper 2,2,6,6-tetramethyl-3,5-heptanedionate (Cu(thd)2) and chromium acetyl acetonate (Cr(acac)3) are used as the metal precursors and ozone as the oxygen source. Smooth and homogeneous thin films with an accurately controlled metal composition can be deposited in the temperature range of 240-270 o C; a post-deposition anneal at 700-950 o C i n a n A r atmosphere then results in well crystalline films with the delafossite structure. Electrical transport measurements confirm the p-type semiconducting behavior of the films. The direct bandgap is determined f r o m U V -v i s s p e c t r o p h o t o m e t r i c m e a s u r e m e n t s t o b e 3 . 0 9 e V . T h e observed transmittance is greater than 75% in the visible range.

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Section: Introductionmentioning

confidence: 99%

Atomic layer deposition of transparent semiconducting oxide CuCrO₂ thin films

2015

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“…Thus, to synthesize CuCrO 2 under a relatively low temperature, an oxygen-free atmosphere, such as argon gas, is required [3,12]. Nanoparticles of CuCrO 2 have been synthesized by hydrothermal [13] and citric acid methods [14]. Although the glycine nitrate process (GNP) is very widely applied to synthesize homogeneous single, binary, and multicomponent oxide systems, it has not been employed to synthesize copper-chromite solid solutions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of nanosized CuCrO2 porous powders via a self-combustion glycine nitrate process

Chiu

Wang

et al. 2011

Journal of Alloys and Compounds

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“…In our systems, the last effect overcomes the former two, eventually resulting in the blue-shift of optical bandgap. This explanation has also been used in some other semiconductor nanocrystals [16,17].…”

Section: Optical Propertiesmentioning

confidence: 78%