硫化铅超细纳米带和纳米线的TEM表征

TEM characterization of ultra small lead sulfide nanobelts and nanowires

本文报道了硫化铅超细纳米带和纳米线的电镜研究结果。纳米带宽度小于20nm,纳米线直径约30nm,轴向生长方向均为[110]方向。纳米带晶格完整,少有缺陷,而在纳米线中观察到Σ17、Σ5的[001]倾侧晶界和Σ17[001]对称倾转晶界,倾侧晶界由一晶粒的{410}或{210}晶面族与另一晶粒的{200}晶面族相互碰撞而形成;对称倾转晶界由两晶粒的{410}晶面族相互碰撞而形成。

The TEM characterization of lead sulfide ultra small nanobelts and nanowires were reported. The width of nanobelts was less than 20nm, and the diameter of nanowires was about 30nm. All of them grew along[110] direction. The nanobelts were perfect and absent of defects, while Σ17,Σ5[001] tilt grain boundaries and Σ17 symmetrical[001] grain boundaries were observed in nanowires. The grain boundaries might be resulted from the collision of {410} or {210} with {410} or {200}, respectively.