Chang, SS Yoon, SO Choi, GJ Kawakami, Y Kurokawa, S Sakai, A 2024-01-21T17:39:45Z 2024-01-21T17:39:45Z 2022-01-10 1998-01 0021-4922 https://pubs.kist.re.kr/handle/201004/143398 Thin porous silicon (PS) exhibits the red and blue luminescence bands without any rapid thermal oxidation. In addition, ambient air aged thin PS displays the increase of blue photoluminescence (PL) band with the reduction of the red PL band. Scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS) have been performed both on freshly prepared and ambient air aged anodically etched PS samples. STM studies of these samples reveal the porous structure and displays less than 5 nm feature size for visible luminescing samples. STS analysis of freshly prepared PS shows the expected increase in band-gap energy compared with unetched silicon. The ambient air aged PS which exhibits both red and blue PL reveals an electronic structure similar to that obtained from STS. English JAPAN J APPLIED PHYSICS LIGHT EMISSION PHOTOLUMINESCENCE Properties of ambient air aged thin porous silicon Article 10.1143/JJAP.37.297 1 JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, v.37, no.1, pp.297 - 298 JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS 37 1 297 298 scie scopus 000071972400062 2-s2.0-0031675591 Physics, Applied Physics Article LIGHT EMISSION PHOTOLUMINESCENCE scanning tunneling microscopy scanning tunneling spectroscopy nanostructures porous silicon blue luminescence