%0 Journal Article
%T Influence of supercritical and natural drying methods on structure and properties of porous silicon
%A XU Dongsheng
%A <br>XU Dongsheng
%A GUO Guolin
%A GUI Linlin
%A TANG Youqi （State Key Laboratory for Structural Chemistry of Unstable and Stable Species
%A Institute of Physical Chemistry
%A Peking University
%A Beijing
%A China ZHANG Bairui & QIN Guogang （
%J 科学通报(英文版)
%D 2000
%I 
%X We have studied the surface morphology, photoluminescence (PL), Raman spectra and optical absorption of the porous silicon (PS) samples prepared under supercritical drying (SD) and natural drying (ND) process. The experimental results of scan electron microphotograph and Raman spectra show that there are obvious differences in microstructure between the SD and ND samples. No crack of the skeleton has been found in the SD sample, but the skeleton of the ND sample has heavily destroyed. Besides, the PL and absorption spectra of the SD sample are not the same as those of the ND sample.
%K porous silicon
%K supercritical drying
%K photoluminescence
%K optical absorption<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=5C907C0A6F05A1FF&yid=9806D0D4EAA9BED3&vid=94E7F66E6C42FA23&iid=9CF7A0430CBB2DFD&sid=725C082EB6FD280F&eid=F2947E14627CD734&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=13