http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
우마르아메드,Young Jin Choi,서은경,A. Al-Hajry,한윤봉 한국물리학회 2008 Current Applied Physics Vol.8 No.6
Various kind of ZnO nanostructures such as nanowires, nanonails and nanocombs were synthesized by the thermal evaporation process onto the steel alloy substrate without the use of metal catalyst or any additives. Detailed structural characterizations indicated that the grown products possess a single crystallinity with the wurtzite hexagonal crystal structure. Presence of strong optical-phonon E2 mode, in all the cases, presents the good crystallinity with the wurtzite hexagonal phase for the deposited products. Additionally, appearance of dominated, strong and sharp UV emission in the room-temperature photoluminescence spectra confirmed the good optical properties for the grown nanostructures. A vapor–solid growth mechanism has been proposed for the growth of the nanostructures.
우마르아메드,김상훈,한윤봉 한국물리학회 2008 Current Applied Physics Vol.8 No.6
ZnO nanocombs have been fabricated in high yield via a thermal evaporation process on Si(111) substrate by using metallic zinc powder and oxygen as source materials for zinc and oxygen, respectively, without the use of catalyst or additives at low-temperature. Morphological investigations revealed that the nanocombs were grown in high density over the whole substrate surface. The branches (teeth) of the nanocombs are uniform and nicely attached along one side of the ribbon-like stem and are arranged in a proper manner. X-ray diffraction patterns confirmed that the grown nanostructures were single-crystalline and possessed a wurtzite hexagonal phase. Room-temperature photoluminescence (PL) spectrum of the grown nanostructures is exhibit a dominant, sharp and strong UV emission with a suppressed deep-level emission indicating good crystallinity and optical properties for the as-grown ZnO nanocombs.
Yoon-Bong Hahn,Suk Lee,우마르아메드,Sang Hoon Kim,N. Koteeswara Reddy 한국화학공학회 2007 Korean Journal of Chemical Engineering Vol.24 No.6
vapor deposition (CFCVD) process using diethyl zinc and oxygen as precursors for zinc and oxygen, respectively. Mor-phological investigations revealed that the as-grown nanoneedles exhibited sharpened tips and wider bases, having thetypical diameters at their bases and tips, 6010 nm and 2010 nm, respectively. Detailed structural characterizationsconfirmed that the as-grown products were single crystalline with a wurtzite hexagonal phase and were grown pre-ferentially along the [0001] direction. The room-temperature photoluminescence (PL) spectrum showed a strong andsharp UV emission at 378 nm with a very weak, suppressed and broad green emission at 520 nm, substantiating goodoptical properties for the as-grown ZnO nanoneedles.