spectrum n. (pl. -tra ) 1.【物理学】谱,光谱;波谱;能谱,质谱。 2.【无线电】射频频谱;无线电(信号)频谱。 3.【心理学】(眼睛的)余像;残像。 4.〔转义〕范围,幅度;(连续的)系列。 an absorption spectrum 吸收(光)谱。 a bright line spectrum 线状光谱。 an optical spectrum 光谱。 a solar spectrum 太阳光谱。 a wide spectrum of opinion 意见的不同幅度甚大。
Xrd patterns , excitation spectra , emission spectra , photo - stimulated emission spectra , photo - stimulated emission decay curves and thermo - luminescence spectra have been measured on the samples 对样品进行了x射线衍射分析( xrd ) 、激发光谱、发射光谱、光激励发光光谱、光激励发光衰减和热释光谱测定。
It was found that the luminescence spectra of zno could be optimized by simply varying the exciting light and heat - treatment temperat ures . blue emission ( 463 nm ) was obtained when the zno was heated under 300 ? and the vertical - polarized exciting light ( 310 nm ) was used . polarization - sensitive measurements revealed an obvious anisotropy in the pl spectra of the wurtize zno nanoparticles 在优化zno薄膜荧光光谱的过程中得到了很强的463nm单峰兰色荧光,考察了薄膜的偏振荧光随温度的变化,采用310nm的垂直偏振光激发经300热处理的薄膜,可以在463nm处获得很好的荧光偏振比0 . 87 。