Some new synthetic low-dimensional semiconductors based on inorganic units

✍ Scribed by G. C. Papavassiliou; G. A. Mousdis; I. Koutselas; C. P. Raptopoulou; A. Terzis; M. G. Kanatzidis; E. A. Axtell III

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 116 KB
• Volume: 8
• Category: Article
• ISSN: 1616-301X
• DOI: 10.1002/(sici)1099-0712(1998090)8:5<263::aid-amo349>3.0.co;2-x

✦ Synopsis

The structural, optical and related properties (i.e. photoluminescence and resonance Raman spectra) of some synthetic (i.e. unconventional) low-dimensional semiconductor systems such as K 2 Cd 3 S 4 , [CH 3 SC(NH 2 )5 5NH 2 ] 3 PbI 5 and [H 3 N(CH 2 ) 6 NH 3 ]BiI 5 are reported. They are compared with the properties of the corresponding higher-dimensionality systems. A blue shift of the excitonic bands and an enhancement of their binding energy and intensity were observed by decreasing the dimensionality or the size of the materials active part. The results are similar to those obtained from conventional semiconductors by decreasing the dimensionality or the size and are attributed to quantum confinement of excitons. *