太赫兹科学与电子信息学报
太赫玆科學與電子信息學報
태혁자과학여전자신식학보
Information and Electronic Engineering
2014年
4期
505-507
,共3页
袁明辉%刘顺顺%赵堤%张益彬
袁明輝%劉順順%趙隄%張益彬
원명휘%류순순%조제%장익빈
多孔硅%电化学腐蚀法%单羟基正醇
多孔硅%電化學腐蝕法%單羥基正醇
다공규%전화학부식법%단간기정순
porous silicon%electrochemical etching method%monohydric alcohol
实验研究了无光照情况下多孔硅制备中不同单羟基正醇对形貌的影响。实验结果表明,随着醇碳链的增长,多孔硅孔密度减小,枝杈变长,枝杈的尖端变得尖锐。在孔的生长过程中,十字枝杈首先沿着晶格方向快速生长,然后晶格方向的生长速率减小,而非晶格方向则持续生长直到空穴耗尽。本实验增进了对硅溶解动力学中醇作用机理的理解。
實驗研究瞭無光照情況下多孔硅製備中不同單羥基正醇對形貌的影響。實驗結果錶明,隨著醇碳鏈的增長,多孔硅孔密度減小,枝杈變長,枝杈的尖耑變得尖銳。在孔的生長過程中,十字枝杈首先沿著晶格方嚮快速生長,然後晶格方嚮的生長速率減小,而非晶格方嚮則持續生長直到空穴耗儘。本實驗增進瞭對硅溶解動力學中醇作用機理的理解。
실험연구료무광조정황하다공규제비중불동단간기정순대형모적영향。실험결과표명,수착순탄련적증장,다공규공밀도감소,지차변장,지차적첨단변득첨예。재공적생장과정중,십자지차수선연착정격방향쾌속생장,연후정격방향적생장속솔감소,이비정격방향칙지속생장직도공혈모진。본실험증진료대규용해동역학중순작용궤리적리해。
Several-Porous-Silicon(PS)-films-with-macropores-are-fabricated-by-electrochemical-etching-method-with-different-monohydric-alcohol-additives-without-the-help-of-illumination.-The-morphologies-of-PS-films-are-investigated-systematically.-Experimental-results-show-that-as-the-increase-of-the-order-of-alcohols,-the-pore-size-of-the-PS-increases,-the-pore-density-decreases,-and-the-tip-of-crossed-pore-becomes-sharper.-The-etching-speed-is-fast-in-the-direction-of-lattice-orientation-at-the-beginning,-but-it-gradually-slows-down-in-the-etching-process.-While-the-etching-in-the-direction-of-amorphous-orientation-keeps-constant,-as-a-result,-the-pore-shape-is-crossed-at-the-beginning-and-it-is-gradually-plumped-until-the-holes-exhausted.-The-experimental-results-obtained-in-this-study-highlight-the-role-of-alcohols-in-the-dissolution-kinetics-of-the-silicon,-which-has-a-direct-impact-on-the-pore-growth-process.