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Se : 0.25mg/ml Solvent : N 2 H 4 + H 2 O (1:1) Amorphous phase ( Red color)

Se deposition from solution. Se : 0.25mg/ml Solvent : N 2 H 4 + H 2 O (1:1) Amorphous phase ( Red color) Coffee ring effect : Co-solvent solution was tried. Se Solvent: N 2 H 4 + DMF + H 2 O (1:0.5:0.5) Poor coating Hexagonal crystalline phase ( Metallic gray color).

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Se : 0.25mg/ml Solvent : N 2 H 4 + H 2 O (1:1) Amorphous phase ( Red color)

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  1. Se deposition from solution Se : 0.25mg/ml Solvent : N2H4 + H2O (1:1) Amorphous phase (Red color) Coffee ring effect : Co-solvent solution was tried Se Solvent: N2H4 + DMF + H2O (1:0.5:0.5) Poor coating Hexagonal crystalline phase (Metallic gray color)

  2. Se deposition on Mo Se/Mo/Glass Mo/Glass Mo : 20mTorr 260V 0.3A 20min. Se : 0.25mg/ml (N2H4:H2O=1:1) 300ul drop-casting (b) (a)

  3. Selenization Se/Mo/Glass Mo/Glass Se/Glass (b) (c) (a) RTA 400℃ 10min. in 4% H2/Ar (6Torr) (b) (c) (a)

  4. Cu DC-sputtering 20mTorr 470V 0.3A 10min – 150nm 10mTorr 480V 0.15A 10min – 100nm (a) (b)

  5. Cu 250nm In 550nm On Glass

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