zenan shen - Academia.edu (original) (raw)
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Papers by zenan shen
2016 17th International Conference on Electronic Packaging Technology (ICEPT), 2016
The reliability is the important performance of high power semiconductor laser. Thermally acceler... more The reliability is the important performance of high power semiconductor laser. Thermally accelerated ageing test is an important technology of lifetime evaluation and reliability analysis. In this study, three groups of thermally accelerated ageing tests of conduction-cooled-packaged 60W 808nm high power diode laser arrays packaged by Indium solder at constant current have been carried out. Analysis of ageing data suggest the extrapolated lifetime under room temperature to value device reliability. We also analyze and discuss the degradation modes. This work can provide guidance for optimizing the chip and package structure, is helpful for improving performance and enhancing reliability of high power semiconductor lasers.
Chinese Physics B, 2014
Emitted multi-crystalline silicon and black silicon solar cells are conformal doped by ion implan... more Emitted multi-crystalline silicon and black silicon solar cells are conformal doped by ion implantation using the plasma immersion ion implantation(PIII) technique. The non-uniformity of emitter doping is lower than 5%. The secondary ion mass spectrometer profile indicates that the PIII technique obtained 100-nm shallow emitter and the emitter depth could be impelled by furnace annealing to 220 nm and 330 nm at 850?C with one and two hours, respectively. Furnace annealing at 850?C could effectively electrically activate the dopants in the silicon. The efficiency of the black silicon solar cell is14.84% higher than that of the mc-silicon solar cell due to more incident light being absorbed.
Surface and Coatings Technology, 2013
Solar Energy Materials and Solar Cells, 2013
Scripta Materialia, 2013
ABSTRACT
Chinese Physics B, 2014
The influence of atomic layer deposition parameters on the negative charge density in AlOxfilm is... more The influence of atomic layer deposition parameters on the negative charge density in AlOxfilm is investigated by the corona-charge measurement.Results show that the charge density can reach up to 1.56×1012cm 2when the thickness of the film is 2.4 nm.The influence of charge density on cell conversion efficiency is further simulated using solar cell analyzing software(PC1D).With AlOxpassivating the rear surface of the silicon,the cell efficiency of 20.66%can be obtained.
Solar Energy, 2012
ABSTRACT
2016 17th International Conference on Electronic Packaging Technology (ICEPT), 2016
The reliability is the important performance of high power semiconductor laser. Thermally acceler... more The reliability is the important performance of high power semiconductor laser. Thermally accelerated ageing test is an important technology of lifetime evaluation and reliability analysis. In this study, three groups of thermally accelerated ageing tests of conduction-cooled-packaged 60W 808nm high power diode laser arrays packaged by Indium solder at constant current have been carried out. Analysis of ageing data suggest the extrapolated lifetime under room temperature to value device reliability. We also analyze and discuss the degradation modes. This work can provide guidance for optimizing the chip and package structure, is helpful for improving performance and enhancing reliability of high power semiconductor lasers.
Chinese Physics B, 2014
Emitted multi-crystalline silicon and black silicon solar cells are conformal doped by ion implan... more Emitted multi-crystalline silicon and black silicon solar cells are conformal doped by ion implantation using the plasma immersion ion implantation(PIII) technique. The non-uniformity of emitter doping is lower than 5%. The secondary ion mass spectrometer profile indicates that the PIII technique obtained 100-nm shallow emitter and the emitter depth could be impelled by furnace annealing to 220 nm and 330 nm at 850?C with one and two hours, respectively. Furnace annealing at 850?C could effectively electrically activate the dopants in the silicon. The efficiency of the black silicon solar cell is14.84% higher than that of the mc-silicon solar cell due to more incident light being absorbed.
Surface and Coatings Technology, 2013
Solar Energy Materials and Solar Cells, 2013
Scripta Materialia, 2013
ABSTRACT
Chinese Physics B, 2014
The influence of atomic layer deposition parameters on the negative charge density in AlOxfilm is... more The influence of atomic layer deposition parameters on the negative charge density in AlOxfilm is investigated by the corona-charge measurement.Results show that the charge density can reach up to 1.56×1012cm 2when the thickness of the film is 2.4 nm.The influence of charge density on cell conversion efficiency is further simulated using solar cell analyzing software(PC1D).With AlOxpassivating the rear surface of the silicon,the cell efficiency of 20.66%can be obtained.
Solar Energy, 2012
ABSTRACT