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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-02-27 Hits: Popular:AG11 battery
A. Solar grade polysilicon material
skills requirement:
Overall requirements: Silicon content 99.9999% Boron content: <0.20ppba Phosphorus content: <0.90ppba Carbon content: <1.00ppba Metal content: <30.00ppba Metal surface content: <30.00ppba Size requirements: 25mm---250mm Polycrystalline type: p-type resistivity: >0.50OhmcmB, broken semiconductor grade silicon wafer
skills requirement:
Semiconductor-grade silicon wafers are in the shape of arc-shaped chips. The thickness of the chip is >=400um. The model is p-type. Resistivity: >0.50OhmcmC, small polysilicon.
skills requirement
1. The model is N type, the resistivity is greater than 50ohmcn, the carbon content is less than 5*1016/cm3, and the fluorine content is less than 5*1017/cm3
2. The block size is 4mm
3. There should be no oxide interlayers and infusible materials, and it is best to use wash-free materials.
D. Czochralski polysilicon
skills requirement
1. The phosphorus detector is N-type, with a resistivity greater than 100ohmcm, and the boron detector is p-type, with a resistivity greater than 1000ohmcm. The carrier lifetime is 100um longer, the carbon content is less than 1016cm3, and the oxygen content is less than 1017cm3
2. The block is less than 30mm
3. There should be no oxide interlayers and infusible materials, and it is best to use wash-free materials.
E. Zone melting head and tail material
skills requirement
1.N type, resistivity is greater than 50chmom and minority carrier lifetime is greater than 100μm
2. The block is larger than 30mm
3. There should be no bubbles in the zone melting head and tail materials, no contamination caused by contact with the coil, and no flowing silicon or infusible matter from the zone melting process.
4. Preferably no-wash material
F. Straight-pull head and tail materials (IC materials), preferably no-wash materials
1.N type, resistivity is greater than 10ohmom
2.p type, resistivity greater than 0.5ohmom
3. The block is larger than 30mm and the thickness is larger than 0.5mm.
4. There should be no air bubbles or infusible matter in the straight-pull head and tail materials.
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