科研之友
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摘要
Few-layer graphene was fabricated on nickel substrates using pulsed laser deposition at a relatively low temperature of 750 degrees C. The effects of cooling rate and laser energy on the ability to produce crystalline graphene layers were studied. It was observed that using a cooling rate of 1 and 50 degrees C/min produced few-layer graphene while the latter gave less defects. Laser energy was a less critical factor as long as the laser energy was below 100 mJ, however a higher laser energy was detrimental to the precipitation process. The mechanisms behind the observation of such phenomena are explained.
- 出版日期2010-9-13
