121st General Meeting of the KCS

Type Poster Presentation
Area Material Chemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code MAT.P-503
Subject PREPARATION OF TIN SULFIDE THIN FILMS BY METAL ORGANIC CHEMICAL VAPOR DEPOSITION USING Sn(dmamp)2
Authors Ji Woon Choi, TAEK-MO CHUNG1,*
Advanced Materials Engineering, Korea Advanced Institute of Science and Technology, Korea
1Chemical Materials Division Center for Thin Film M, Korea Research Institute of Chemical Technology, Korea
Abstract

Tin (II) sulfide (SnS) is a promising candidate to replace current thin film light absorbing materials in photovoltaics. SnS has a moderate band-gap (1.1-1.3 eV) and high absorption coefficient. SnS thin films have been prepared by metal organic chemical vapor deposition (MOCVD) from the reaction of Sn(dmamp)2 and H2S gas as the source materials. The molecular structure of Sn(dmamp)2 is shown in fig. 1. SnS films were deposited on Si and glass substrates at the deposition temperature of 200-400 ℃. Post annealing of SnS thin films was carried out at 400 ℃ for 1 h under the H2S ambient. Hall measurement using van der Pauw method indicate that the film has a p-type conductivity with a hole mobility of 13 cm2/V·s. Raman spectroscopy and x-ray photoelectron spectroscopy results show that SnS thin film has no impurities or other binary phase detected inside the films.

E-mail jiwoon61@naver.com