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Seok, Sang Il
Laboratory for Energy Harvesting Materials and Systems (LEHMS)
Research Interests
  • Solar energy conversion, perovskite solar cells, inorganic-organic hybrid materials and processing, solution chemistry

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Heteroleptic Tin-Antimony Sulfoiodide for Stable and Lead-free Solar Cells

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Title
Heteroleptic Tin-Antimony Sulfoiodide for Stable and Lead-free Solar Cells
Author
Nie RimingLee, Kyoung SuHu, ManmanPaik, Min JaeSeok, Sang Il
Issue Date
2020-11
Publisher
ELSEVIER
Citation
MATTER, v.3, no.5, pp.1701 - 1713
Abstract
The quaternary chalcogenide halides of group IV and V elements have attracted much attention due to their interesting semiconducting properties as well as a suitable band gap for solar cells. Here, for the first time, we report on solar cells using tin-antimony sulfoiodide (Sn2SbS2I3). Sn2SbS2I3 solar cells were fabricated using a chemical single-step deposition process with a solution containing a SbCl3-thiourea complex and SnI2 with the configuration of TiO2 and poly [2,6-(4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b']dithiophene)-alt-4,7-(2,1,3-enzothiadiazole)] as the electron- and hole-transporting layers, respectively. The best-performing cell exhibits a power conversion efficiency of 4.04% under the illumination of standard AM 1.5G conditions (100 mW cm(-2)) These unencapsulated cells exhibited good stabilities at 80% relative humidity, 85 degrees C in air, and under illumination, respectively. These results provide guidelines for fabrication of lead-free heteroleptic perovskite solar cells by hosting divalent or combinations of monovalent and trivalent metal cations.
URI
https://scholarworks.unist.ac.kr/handle/201301/49011
URL
https://www.sciencedirect.com/science/article/pii/S2590238520304471?via%3Dihub
DOI
10.1016/j.matt.2020.08.020
ISSN
2590-2393
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