화학공학소재연구정보센터
Applied Surface Science, Vol.253, No.1, 279-282, 2006
Structural and optical characterization of the propolis films
We have performed structural and optical characterizations of the propolis (an organic entity of biological nature) films grown on various nonorganic substrates. The films were grown from a propolis melt or a propolis alcohol solution. The crystal structure has been observed in the films precipitated from the solution onto substrates such as an amorphous glass and sapphire or semiconductor indium monoselenide. For any growth method, the propolis film is a semiconductor with the bandgap of 3.07 eV at 300 K that is confirmed by a maximum in photoluminescence spectra at 2.86 eV. We argue that propolis films might be used in various optoelectronic device applications. (c) 2006 Elsevier B.V. All rights reserved.