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The phase transformation of CuInS2 from chalcopyrite to wurtzite.

Xie BB, Hu BB, Jiang LF, Li G, Du ZL - Nanoscale Res Lett (2015)

Bottom Line: The phase transition of CuInS2 from chalcopyrite to wurtzite was realized by adjusting the pH value of reaction solution.The emergence of Cu2S in the condition of higher pH value of reaction solution led to the formation of wurtzite CuInS2.This facile method that controls the phase structure by adjusting the solution pH value could open a new way to synthesize other I-III-VI2 ternary semiconductor compounds.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng, 475004 Henan People's Republic of China.

ABSTRACT
In the present work, CuInS2 nanoparticles have been successfully synthesized by water-bath method with deionized water as solvent and thioglycolic acid as complexing agent at 80°C. The phase transition of CuInS2 from chalcopyrite to wurtzite was realized by adjusting the pH value of reaction solution. The emergence of Cu2S in the condition of higher pH value of reaction solution led to the formation of wurtzite CuInS2. This facile method that controls the phase structure by adjusting the solution pH value could open a new way to synthesize other I-III-VI2 ternary semiconductor compounds.

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XRD patterns of the wurtzite CuInS2annealed at different temperatures.
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Fig4: XRD patterns of the wurtzite CuInS2annealed at different temperatures.

Mentions: According to the previous report, metastable wurtzite CuInS2 may transform into chalcopyrite phase when wurtzite CuInS2 is heated to a certain temperature [6,22]. Figure 4 shows the XRD patterns of samples obtained by annealing the wurtzite phase CuInS2 at temperatures of 200°C, 300°C, 400°C, and 500°C, respectively. It shows that the characteristic peaks at 28° of chalcopyrite become more and more obvious with the increase of annealing temperatures. When the metastable wurtzite CuInS2 was annealed from 200°C to 400°C, a coexistence stage of chalcopyrite phase and wurtzite phase CuInS2 might exist. When the temperature reached 500°C, the wurtzite phase CuInS2 completely transformed into chalcopyrite phase.Figure 4


The phase transformation of CuInS2 from chalcopyrite to wurtzite.

Xie BB, Hu BB, Jiang LF, Li G, Du ZL - Nanoscale Res Lett (2015)

XRD patterns of the wurtzite CuInS2annealed at different temperatures.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385122&req=5

Fig4: XRD patterns of the wurtzite CuInS2annealed at different temperatures.
Mentions: According to the previous report, metastable wurtzite CuInS2 may transform into chalcopyrite phase when wurtzite CuInS2 is heated to a certain temperature [6,22]. Figure 4 shows the XRD patterns of samples obtained by annealing the wurtzite phase CuInS2 at temperatures of 200°C, 300°C, 400°C, and 500°C, respectively. It shows that the characteristic peaks at 28° of chalcopyrite become more and more obvious with the increase of annealing temperatures. When the metastable wurtzite CuInS2 was annealed from 200°C to 400°C, a coexistence stage of chalcopyrite phase and wurtzite phase CuInS2 might exist. When the temperature reached 500°C, the wurtzite phase CuInS2 completely transformed into chalcopyrite phase.Figure 4

Bottom Line: The phase transition of CuInS2 from chalcopyrite to wurtzite was realized by adjusting the pH value of reaction solution.The emergence of Cu2S in the condition of higher pH value of reaction solution led to the formation of wurtzite CuInS2.This facile method that controls the phase structure by adjusting the solution pH value could open a new way to synthesize other I-III-VI2 ternary semiconductor compounds.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng, 475004 Henan People's Republic of China.

ABSTRACT
In the present work, CuInS2 nanoparticles have been successfully synthesized by water-bath method with deionized water as solvent and thioglycolic acid as complexing agent at 80°C. The phase transition of CuInS2 from chalcopyrite to wurtzite was realized by adjusting the pH value of reaction solution. The emergence of Cu2S in the condition of higher pH value of reaction solution led to the formation of wurtzite CuInS2. This facile method that controls the phase structure by adjusting the solution pH value could open a new way to synthesize other I-III-VI2 ternary semiconductor compounds.

No MeSH data available.


Related in: MedlinePlus