水熱法制備的ZnO納米線的微結(jié)構(gòu)、光學(xué)性質(zhì)以及光學(xué)模型(英文)
發(fā)布時(shí)間:2022-07-19 11:40
在90°C的溫度環(huán)境下,采用水熱化學(xué)沉積法制備Zn O納米線薄膜,然后用掃描電子顯微鏡、透射光譜和X射線衍射等技術(shù)對(duì)所制備的納米薄膜進(jìn)行表征。結(jié)果表明,制備的納米Zn O薄膜的光學(xué)帶隙在3.274到3.347 e V之間。調(diào)節(jié)p H值可以控制膜的孔隙率和顯微結(jié)構(gòu)。SEM照片清楚地顯示兩層結(jié)構(gòu),且這兩層的空隙率不同。XRD結(jié)果顯示(002)取向的優(yōu)先生長(zhǎng)。針對(duì)納米結(jié)構(gòu)的Zn O薄膜建立一個(gè)完整的光學(xué)模型,包括Bruggeman有效介質(zhì)近似、粗糙表面的光散射和O’Leary-Johnson-Lim帶間吸收模型。利用此光學(xué)模型,擬合實(shí)驗(yàn)測(cè)量的納米結(jié)構(gòu)Zn O薄膜的透射光譜,擬合結(jié)果同實(shí)驗(yàn)結(jié)果具有很高的一致性。
【文章頁數(shù)】:9 頁
【文章目錄】:
1 Introduction
2 Experimental
2.1 Nanowire preparation
2.2 Characterisation methods
3 Results and discussion
3.1 Nanowire characterisation
3.2 Proposed theoretical optical model
3.2.1 Bruggeman effective medium approximation
3.2.2 Rough surface light scattering
3.2.3 O'Leary-Johnson-Lim(OJL)model
3.3 Optical data fitting
4 Conclusions
【參考文獻(xiàn)】:
期刊論文
[1]基于新型形貌的納米結(jié)構(gòu)氧化鋅高性能室溫氣體傳感器(英文)[J]. Naila ZUBAIR,Khalida AKHTAR. Transactions of Nonferrous Metals Society of China. 2019(01)
[2]Zinc Oxide Nanostructures for NO2 Gas–Sensor Applications:A Review[J]. Rajesh Kumar,O.Al-Dossary,Girish Kumar,Ahmad Umar. Nano-Micro Letters. 2015(02)
本文編號(hào):3663350
【文章頁數(shù)】:9 頁
【文章目錄】:
1 Introduction
2 Experimental
2.1 Nanowire preparation
2.2 Characterisation methods
3 Results and discussion
3.1 Nanowire characterisation
3.2 Proposed theoretical optical model
3.2.1 Bruggeman effective medium approximation
3.2.2 Rough surface light scattering
3.2.3 O'Leary-Johnson-Lim(OJL)model
3.3 Optical data fitting
4 Conclusions
【參考文獻(xiàn)】:
期刊論文
[1]基于新型形貌的納米結(jié)構(gòu)氧化鋅高性能室溫氣體傳感器(英文)[J]. Naila ZUBAIR,Khalida AKHTAR. Transactions of Nonferrous Metals Society of China. 2019(01)
[2]Zinc Oxide Nanostructures for NO2 Gas–Sensor Applications:A Review[J]. Rajesh Kumar,O.Al-Dossary,Girish Kumar,Ahmad Umar. Nano-Micro Letters. 2015(02)
本文編號(hào):3663350
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