【摘 要】
:
Nanocomposite Sil-xGex films are deposited by dual-source jet-type inductively coupled plasma chemical vapor deposition (jet-ICPCVD).The segregations and desorp
【机 构】
:
Key Laboratory of Advanced Photonic and Electronic Materials and School of Electronic Science and En
论文部分内容阅读
Nanocomposite Sil-xGex films are deposited by dual-source jet-type inductively coupled plasma chemical vapor deposition (jet-ICPCVD).The segregations and desorptions of Ge atoms,which dominate the structural evolutions of the films during high-temperature annealing,are investigated.When the annealing temperature (Ta) is 900 ℃,the nanocomposite Si1-xGex films are well crystallized,and nanocrystals (NCs) with the core-shell structure form in the films.After being annealed at 1000 ℃ (above the melting point of bulk Ge),Ge atoms accumulate on the surfaces of Ge-rich films,whereas pits appear on films with lower Ge content,resulting from desorption.Meanwhile,voids are observed in the films.A cone-like structure involving the percolation of the homogeneous clusters and the crystallization of NCs enhances Ge segregation.
其他文献
We report a type of thin film AlGaInP red light emitting diode (RLED) on a metallic substrate by electroplating copper (Cu) to eliminate the absorption of GaAs
我坐在教室里,望着窗外已变得金黄的杏叶,才惊觉,已是秋天了。 还依稀记得,小时候的我不喜欢去玄武湖,不喜欢去紫金山,只喜欢去那个小小的,却是真正住在我心里的,我最喜欢的琵琶湖。 沿着由青石铺成的台阶向下走,會看到路两边高大的榛树,那一棵棵树就是一位位战士,守护着这小小的琵琶湖。 漫步在树下,会发现许多的榛子,圆圆的,我一看到就会跑过去,将它们捡起来,看看是不是完好的,然后再吹吹上面的灰,当宝
番茄(Lycopersicon esculentum Mill.;2n=2x=24)作为当今栽培遍及全球的蔬菜作物,其果实的风味品质以及营养含量得到了消费者越发的关注。消费者普遍认同的风味好的番茄需要
秋季来临,很快,鲜美的螃蟹就上市了.rn今天是我在新学期里第一次吃螃蟹的日子.今天晚上我破例没写完作业就吃饭了,那是因为我最爱吃的螃蟹在桌上等着我呢.rn隔着一段距离,我
Influence of intramolecular π-π interaction on the luminescent properties of thermally activated delayed fluorescence (TADF) molecule (3,5-bis(3,6-di-tert-but
小区里有一处凉亭,专供人们乘凉。那天,我刚要走进亭子,就听到一阵清脆的鸟儿的啼鸣声。走进凉亭,我看到一只美丽的画眉鸟正站在亭子旁的草丛中。 在不远处的长椅上,放着一个精致的鸟笼,鸟笼四周的竹篾都被涂上绿色的颜料,笼顶上的笼钩铮明瓦亮,笼门上还挂了个红绒穗子。对鸟来说,这可算得上一幢相当豪华的住宅了。 哈,原来这是一只挣脱了笼宇的“自由鸟”!它自由自在地,一会儿跳入花丛,一会儿又跳进草丛,尾巴还
马铃薯(S. tuberosum L.)属茄科茄属多年生草本植物,是世界和我国第四大粮食作物,具有重要的经济地位。由茄科雷尔氏菌(Ralstonia solanacearum)引起的马铃薯青枯病(Bacterial wilt)是一种世界性病害,在我国也普遍发生,尤其是在长江流域及其以南地区的马铃薯生产中,青枯病在马铃薯生长期和贮存期所造成的损失常在20%左右,严重时可导致绝收,是马铃薯生产中继晚疫