Electroluminescent device based on ZnO film co-doped by erbium and fluorine and preparation method
An electroluminescent device and co-doping technology, which is applied in the field of optoelectronics, can solve the problems of complex device structure and harsh heat treatment conditions, and achieve the effect of simple and easy-to-operate preparation method
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[0040] Example 1
[0041] (1) Take the size as 15×15mm 2 N-type Silicon epitaxial wafer (heavy phosphorus-doped silicon wafer (resistivity 0.0011-0.0012Ω·cm, thickness ~ 625μm) epitaxial lightly phosphorus-doped silicon epitaxial layer (3-15Ω·cm, thickness ~ 45μm)) as the silicon substrate, After cleaning, place the silicon wafer in the RF sputtering chamber, and use a vacuum pump to pump the pressure in the chamber to 5×10 -3 After Pa, pass in high purity O 2 Gas and high purity Ar gas (flow rate ratio O 2 :Ar=1:2) to air pressure 4Pa, use 1% ErF mixed in mole percentage 3 The ZnO ceramic target was sputtered to deposit the film, and the applied power was 120W; during the deposition process, the temperature of the silicon substrate was kept at 100°C and the deposition time was 40min;
[0042] (2) Put the deposited film on O 2 In a gas atmosphere, heat treatment at 700°C for 120 minutes to finally form a ZnO film co-doped with Er and F. The film thickness is ~120nm. In atomic perce...
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[0055] Example 2
[0056] (1) Take the size as 15×15mm 2 N-type Silicon epitaxial wafer (heavy phosphorus-doped silicon wafer (resistivity 0.0011-0.0012Ω·cm, thickness ~ 625μm) epitaxial lightly phosphorus-doped silicon epitaxial layer (3-15Ω·cm, thickness ~ 45μm)) as the silicon substrate, After cleaning, place the silicon wafer in the RF sputtering chamber, and use a vacuum pump to pump the pressure in the chamber to 5×10 -3 After Pa, pass in high purity O 2 Gas and high purity Ar gas (flow rate ratio O 2 :Ar=1:2) to air pressure 4Pa, use 1% ErF mixed in mole percentage 3 The ZnO ceramic target was sputtered to deposit the film, and the applied power was 120W; during the deposition process, the temperature of the silicon substrate was kept at 100°C and the deposition time was 40min;
[0057] (2) Put the deposited film on O 2 In a gas atmosphere, heat treatment at 800°C for 120 minutes to finally form a ZnO film co-doped with Er and F. The film thickness is ~120nm. In atomic perce...
Example Embodiment
[0069] Example 3
[0070] (1) Take the size as 15×15mm 2 N-type Silicon epitaxial wafer (heavy phosphorus-doped silicon wafer (resistivity 0.0011-0.0012Ω·cm, thickness ~ 625μm) epitaxial lightly phosphorus-doped silicon epitaxial layer (3-15Ω·cm, thickness ~ 45μm)) as the silicon substrate, After cleaning, place the silicon wafer in the RF sputtering chamber, and use a vacuum pump to pump the pressure in the chamber to 5×10 -3 After Pa, pass in high purity O 2 Gas and high purity Ar gas (flow rate ratio O 2 :Ar=1:2) to air pressure 4Pa, use 1% ErF mixed in mole percentage 3 , 2% Er 2 O 3 The ZnO ceramic target was sputtered to deposit the film, and the applied power was 120W; during the deposition process, the temperature of the silicon substrate was kept at 100°C and the deposition time was 40min;
[0071] (2) Put the deposited film on O 2 In the atmosphere, heat treatment at 700℃ for 120min, finally forming a ZnO film co-doped with Er and F, the film thickness is ~120nm, the dopi...
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