Presentation Information
[16p-M_101-14]Impact of Solution Combustion Synthesis on SnS Thin Films for Solar Cell Applications
〇CandellGrace Paredes Quino1, Kosuke O. Hara1 (1.NAIST)
Keywords:
Tin sulfide (SnS),Solution combustion synthesis,Thin-film solar cells
Solution combustion synthesis (SCS) has emerged as a simple and cost-effective route for creating different nanomaterials. It is an exothermic reaction, generating large amounts of heat by using fuel, oxidizer and temperature to trigger combustion. Metal oxides are commonly the target products, but few reports have reported metal sulfides as well. The presence of oxygen in the atmosphere can promote metal oxidation, making sulfide fabrication more complex than oxides.
In this work, we attempted to fabricate tin sulfide (SnS) thin films using SCS and compared their properties with conventional sol-gel (SG) thin-films. SnS is an attractive material to make as it is an excellent absorber for solar cells because of its low toxicity, suitable band gap, excellent stability, good charge carrier mobility, and strong light absorption.Our results show that the SCS film only contained pure a-SnS while the SG film contained a combination of a-SnS, Sn2S3 and SnO2. Additionally, SEM-EDS results reveal the Sn/S ratios of the two films: 1/0.89 for the SG film and 1/0.97 for the SCS film.
In this work, we attempted to fabricate tin sulfide (SnS) thin films using SCS and compared their properties with conventional sol-gel (SG) thin-films. SnS is an attractive material to make as it is an excellent absorber for solar cells because of its low toxicity, suitable band gap, excellent stability, good charge carrier mobility, and strong light absorption.Our results show that the SCS film only contained pure a-SnS while the SG film contained a combination of a-SnS, Sn2S3 and SnO2. Additionally, SEM-EDS results reveal the Sn/S ratios of the two films: 1/0.89 for the SG film and 1/0.97 for the SCS film.