光学学报
光學學報
광학학보
ACTA OPTICA SINICA
2001年
4期
499-503
,共5页
鲍海飞%叶水驰%王利平%王骐
鮑海飛%葉水馳%王利平%王騏
포해비%협수치%왕리평%왕기
非晶Se薄膜%自发晶化%拉曼光谱
非晶Se薄膜%自髮晶化%拉曼光譜
비정Se박막%자발정화%랍만광보
利用真空热蒸镀的方法制备了非晶Se薄膜,测试了稳定的非晶Se薄膜、不稳定的非晶Se薄膜和初始自发晶化的非晶Se薄膜的透射率光谱和拉曼光谱。对透射率光谱曲线进行了拟合,计算了薄膜的厚度和折射率随波长的变化关系。在自发晶化过程中,Se薄膜折射率逐渐增大;随波长增大,折射率则减小。初始自发晶化的Se薄膜其透射率低于非晶Se薄膜,光学吸收边向长波长方向移动。拉曼光谱测试表明,非晶Se薄膜在自发晶化过程中,出现标志Se8环和链的结构,不完整的环和链结构在自发晶化过程中得到了增强。
利用真空熱蒸鍍的方法製備瞭非晶Se薄膜,測試瞭穩定的非晶Se薄膜、不穩定的非晶Se薄膜和初始自髮晶化的非晶Se薄膜的透射率光譜和拉曼光譜。對透射率光譜麯線進行瞭擬閤,計算瞭薄膜的厚度和摺射率隨波長的變化關繫。在自髮晶化過程中,Se薄膜摺射率逐漸增大;隨波長增大,摺射率則減小。初始自髮晶化的Se薄膜其透射率低于非晶Se薄膜,光學吸收邊嚮長波長方嚮移動。拉曼光譜測試錶明,非晶Se薄膜在自髮晶化過程中,齣現標誌Se8環和鏈的結構,不完整的環和鏈結構在自髮晶化過程中得到瞭增彊。
이용진공열증도적방법제비료비정Se박막,측시료은정적비정Se박막、불은정적비정Se박막화초시자발정화적비정Se박막적투사솔광보화랍만광보。대투사솔광보곡선진행료의합,계산료박막적후도화절사솔수파장적변화관계。재자발정화과정중,Se박막절사솔축점증대;수파장증대,절사솔칙감소。초시자발정화적Se박막기투사솔저우비정Se박막,광학흡수변향장파장방향이동。랍만광보측시표명,비정Se박막재자발정화과정중,출현표지Se8배화련적결구,불완정적배화련결구재자발정화과정중득도료증강。
Thin a-Se films were prepared by thermal evaporation method. Optical transmission spectra and Raman scattering spectra were measured for stable a-Se film, unstable a-Se film and its initially spontaneous crystallization film. The transmission spectra were simulated and, refractive indexes varying with wavelength and thickness of films were calculated. The refractive index was increased during the spontaneous crystallization and, decreased with the increasing wavelength. The transmission intensity of the spontaneous crystallization of Se thin film was lower than that of the amorphous Se thin film and the absorption edge was shifted to longer wavelength. The distorted chain and incomplete Se8 ring structures were also enhanced during the spontaneous crystallization process measured by the Raman scattering measurement.