共查询到19条相似文献,搜索用时 296 毫秒
1.
2.
3.
4.
激光晶化制备多晶硅薄膜技术 总被引:1,自引:0,他引:1
激光晶化是一种制作晶硅薄膜器件(如薄膜晶体管、太阳能电池)很有效的技术.展望了低温多晶硅薄膜的应用前景,详细介绍了近几年激光晶化制备多晶硅薄膜技术的研究成果,并就激光对非晶硅作用的原理作了简单讨论. 相似文献
5.
6.
7.
8.
Poly—Si TFT制备工艺 总被引:2,自引:0,他引:2
在有源矩阵液晶显示中,目前倍受重视的应数多晶硅有源矩阵液晶显示技术,本文较详细地给出了高温多晶硅薄膜晶体管的制备工艺及其特性,并分析讨论了制备条件对多晶硅薄膜晶体管各种参数的影响。 相似文献
9.
玻璃衬底多晶硅薄膜太阳电池因具有成本低廉、转换效率高以及性能稳定等优点引起了人们的广泛关注。详细阐述了玻璃衬底多晶硅薄膜太阳电池的两种典型结构、基本制备流程及其关键工艺对太阳电池性能的影响,还介绍了玻璃衬底制备多晶硅薄膜的直接制备技术、固相晶化技术、液相晶化技术和籽晶层技术以及玻璃衬底多晶硅薄膜太阳电池的研究现状。由于薄膜太阳电池性能的好坏直接取决于薄膜的质量,所以关键工艺中的快速热退火和氢钝化能显著提高电池性能。然而,至今各种制备方法都不够成熟,不能规模化制备多晶硅薄膜,因此改进和发展现有多晶硅薄膜的制备技术是今后玻璃衬底多晶硅薄膜太阳电池研究的核心课题。 相似文献
10.
11.
12.
The poly-Si thin film was obtained by electric field-enhanced metal-induced lateral crystallization technique at low temperature. Raman spectra, X-ray diffraction (XRD) and scan electron microscope (SEM) were used to analyze the crystallization state, crystal structure and surface morphology of the poly-Si thin film. Results show that the poly-Si has good crystallinity, and the electric field has the effect of enhancing the crystallization when DC electric voltage is added to the film during annealing. Secondary ion mass spectroscopy (SIMS) shows that the metal Ni improves the crystallization by diffusing into the a-Si thin film, so the crystallization of the lateral diffused region of Ni is the best. The p-channel poly-Si thin film transistors (TFTs) were fabricated by this large-size grain technique. The IDS−VDS and the transfer characteristics of the TFTs were measured, from which, the hole mobility of TFTs was 65 cm2/V s, the on and off current ratio was 5×106. It is a promising method to fabricate high-performance poly-Si TFTs at low temperature for applications in AMLCD and AMOLED. 相似文献
13.
ZENG Xiang-bin XU Zhong-yang DAI Yong-bin WANG Chang-an ZHOU Xue-mei ZHAO Bo-feng 《半导体光子学与技术》2000,6(2):96-99,104
A novel approach of two-step laser crystallization for the growth of poly-Si thin film on glass substrate is investigated. Using this approach, we fabricated poly-Si thin film transistors with electron mobility of 103 cm2/V·s and on/off current ratio of 1×10~7.They are better than those of the poly-Si TFTs fabricated by conventional single-step excimer laser crystallization. We also analyzed the structure of the laser crystallized poly-Si thin film by spectroscopic ellipsometry, and proposed the models to simulate the poly-Si thin film and calculated the ellipsometric spectra. The calculated results are in good agreement with the measured results. 相似文献
14.
Jin Hyeok Kim Jeong Yong Lee Hong Seung Kim Yoon-Ho Song Kee-Soo Nam 《Electron Device Letters, IEEE》1996,17(5):205-207
A novel approach that can reduce the thermal budget in the fabrication of thin film transistors (TFTs) using a Si/Si0.7Ge0.3/Si triple film as an active layer was proposed. The crystallization behavior of the triple film was described and device characteristics of Si/Si0.7Ge0.3 /Si TFTs were compared with those of Si TFTs and of SiGe TFTs. The triple film was completely crystallized only after a 25-h anneal at 550°C. N-channel polycrystalline Si/Si0.7Ge0.3/Si TFTs had a field-effect mobility of 57.9 cm2/Vs and an Ion/Ioff ratio of 5.7×106. This technique provides not only a shorter time processing capability than Si TFT's technology but also superior device characteristics compared to SiGe TFTs 相似文献
15.
16.
使用倾斜角沉积(GLAD)的电子束蒸发技术,制备了倾斜角度在60°~85°之间的ZnS双折射雕塑薄膜(STF)。使用X射线衍射(XRD)和扫描电镜(SEM)检测了ZnS薄膜的结晶状态和断面形貌,使用Lamda-900分光光度计测量了薄膜在不同的偏振光入射时的透过率。研究发现,室温下倾斜沉积ZnS薄膜断面为倾斜柱状结构,且薄膜的结晶程度不高。在相同的监控厚度时,随倾斜角度增大,沉积到基片上的薄膜厚度逐渐变小,但仍然大于余弦曲线显示的理论厚度。根据偏振光垂直入射时薄膜的透过光谱计算了不同角度沉积的薄膜的折射率和双折射。结果显示当倾斜角度为75°时,薄膜的双折射效应最显著,此时Δn=0.044。 相似文献
17.
18.
19.
硅基光电集成技术是当代高速信息化的重要发展方向之一。为了研究制备在硅衬底上的新型发光材料,突破Nd:YAG固体激光工作物质主要是晶体、透明陶瓷等固体形态的限制,采用电子束蒸发沉积工艺,在硅(100)衬底上制备了Nd:YAG薄膜,并对Nd:YAG薄膜的表面形貌、晶体结构、光学特性进行了测试。X射线和扫描电子显微镜测试结果显示,Nd:YAG薄膜经1100℃真空高温退火处理1h后有效结晶,采用钛蓝宝石激光器输出808nm激光激发,液氮冷却的InGaAs阵列探测器室温下得到Nd:YAG薄膜的1064nm主荧光峰的荧光光谱。结果表明,采用电子束蒸发沉积和后续高温退火工艺可以在硅衬底上制备Nd:YAG晶体薄膜。 相似文献