Blue-green electroluminescence has been observed in free-standing diamond films which were deposited by microwave plasma assisted CVD on silicon substrates.The electroluminescence device is driven by a 60 Hz power sup...Blue-green electroluminescence has been observed in free-standing diamond films which were deposited by microwave plasma assisted CVD on silicon substrates.The electroluminescence device is driven by a 60 Hz power supply.The threshold voltage was about 112 V peak-to-peak.The electroluminescence spectrum at room temperature,showed a blue-green band with the peak centered at 485nm suggesting band A type emission.Electroluminescence was also observed at 77K.展开更多
Blue electroluminescence of boron doped diamond thin film is reported.The boron doped diamond thin films were deposited by microwave plasma assisted chemical vapor deposition on silicon substrate.The electroluminescen...Blue electroluminescence of boron doped diamond thin film is reported.The boron doped diamond thin films were deposited by microwave plasma assisted chemical vapor deposition on silicon substrate.The electroluminescence device was driven by a frequency-modulated power supply.The optimum frequency is near 3 kHz.The dependence of electroluminescence intensity on boron impurity has been investigated.The intensity increases with increasing boron impurity.This is expected result according to“Band A”electroluminescence mechanism of donor-accepter pairs recombination.展开更多
Switching phenomena in some semiconductor wafers and thin films were observed early. However, to our knowledge, there is no report about the switching behaviour of diamond thin film. Because the diamond thin film poss...Switching phenomena in some semiconductor wafers and thin films were observed early. However, to our knowledge, there is no report about the switching behaviour of diamond thin film. Because the diamond thin film possesses a great number of good properties, such as wide band gap, high breakdown voltage, high electron mobilities and high electron saturation velocity, the investigation on the switching behaviour of diamond thin film will be of great value for achieving high voltage and high power switching devices. We展开更多
基金the National Natural Science Foundation of China,and the Natural Science Foundation of He'nan province.
文摘Blue-green electroluminescence has been observed in free-standing diamond films which were deposited by microwave plasma assisted CVD on silicon substrates.The electroluminescence device is driven by a 60 Hz power supply.The threshold voltage was about 112 V peak-to-peak.The electroluminescence spectrum at room temperature,showed a blue-green band with the peak centered at 485nm suggesting band A type emission.Electroluminescence was also observed at 77K.
基金Supported by the National Natural Science Foundation of Chinathe Natural Science。
文摘Blue electroluminescence of boron doped diamond thin film is reported.The boron doped diamond thin films were deposited by microwave plasma assisted chemical vapor deposition on silicon substrate.The electroluminescence device was driven by a frequency-modulated power supply.The optimum frequency is near 3 kHz.The dependence of electroluminescence intensity on boron impurity has been investigated.The intensity increases with increasing boron impurity.This is expected result according to“Band A”electroluminescence mechanism of donor-accepter pairs recombination.
文摘Switching phenomena in some semiconductor wafers and thin films were observed early. However, to our knowledge, there is no report about the switching behaviour of diamond thin film. Because the diamond thin film possesses a great number of good properties, such as wide band gap, high breakdown voltage, high electron mobilities and high electron saturation velocity, the investigation on the switching behaviour of diamond thin film will be of great value for achieving high voltage and high power switching devices. We
