Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2021 Nov 26;11(12):3206.
doi: 10.3390/nano11123206.

One-Step Solution Deposition of Antimony Selenoiodide Films via Precursor Engineering for Lead-Free Solar Cell Applications

Yong Chan Choi  1 , Kang-Won Jung  1
Affiliations

One-Step Solution Deposition of Antimony Selenoiodide Films via Precursor Engineering for Lead-Free Solar Cell Applications

Yong Chan Choi et al. Nanomaterials (Basel). .

Abstract

Ternary chalcohalides are promising lead-free photovoltaic materials with excellent optoelectronic properties. We propose a simple one-step solution-phase precursor-engineering method for antimony selenoiodide (SbSeI) film fabrication. SbSeI films were fabricated by spin-coating the precursor solution, and heating. Various precursor solutions were synthesized by adjusting the molar ratio of two solutions based on SbCl3-selenourea and SbI3. The results suggest that both the molar ratio and the heating temperature play key roles in film phase and morphology. Nanostructured SbSeI films with a high crystallinity were obtained at a molar ratio of 1:1.5 and a temperature of 150 °C. The proposed method could be also used to fabricate (Bi,Sb)SeI.

Keywords: SbSeI; antimony selenoiodide; one-step method; solar cells; solution process.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Schematic illustrations of (a) the synthesis of the one-step solution, and (b) the deposition process for SbSeI thin films.
Figure 2
Figure 2
(a) Absorption spectra, (b) XRD patterns, and (c) FESEM images of samples prepared using precursor solutions with different Sol A:Sol B molar ratios. The peak positions of Sb2Se3 and SbSeI are shown in (b), based on the reference data of Sb2Se3 (ICDD # 98-065-1518, blue column) and SbSeI (ICDD # 98-003-1292, red column).
Figure 3
Figure 3
(a) Absorption spectra, (b) XRD patterns, and (c) FESEM images of samples prepared at different annealing temperatures. (d) Magnified image, marked by a yellow box in (c). All samples were fabricated using the precursor solution with a Sol A:Sol B molar ratio of 1:1.5. In (b), two reference patterns of Sb2Se3 ((ICDD # 98-065-1518) and SbSeI (ICDD # 98-003-1292) are shown as blue columns and red columns, respectively.
Figure 4
Figure 4
(a) Absorption spectra and (b) XRD patterns of control and Bi-SbSeI samples.
Figure 5
Figure 5
(a) UPS spectra of SbSI and (Bi,Sb)SeI, and (b) the derived energy level diagram.
See this image and copyright information in PMC

References

    1. Nie R., Sumukam R.R., Reddy S.H., Banavoth M., Seok S.I. Lead-free perovskite solar cells enabled by hetero-valent substitutes. Energy Environ. Sci. 2020;13:2363–2385. doi: 10.1039/D0EE01153C. - DOI
    1. Choi Y.C., Jung K.-W. Recent Progress in Fabrication of Antimony/Bismuth Chalcohalides for Lead-Free Solar Cell Applications. Nanomaterials. 2020;10:2284. doi: 10.3390/nano10112284. - DOI - PMC - PubMed
    1. Huang Y.T., Kavanagh S.R., Scanlon D.O., Walsh A., Hoye R.L.Z. Perovskite-inspired materials for photovoltaics and beyond-from design to devices. Nanotechnology. 2021;32:132004. doi: 10.1088/1361-6528/abcf6d. - DOI - PubMed
    1. Li T., Luo S., Wang X., Zhang L. Alternative Lone-Pair ns2-Cation-Based Semiconductors beyond Lead Halide Perovskites for Optoelectronic Applications. Adv. Mater. 2021;33:2008574. doi: 10.1002/adma.202008574. - DOI - PubMed
    1. Nie R., Hu M., Risqi A.M., Li Z., Seok S.I. Efficient and Stable Antimony Selenoiodide Solar Cells. Adv. Sci. 2021;8:2003172. doi: 10.1002/advs.202003172. - DOI - PMC - PubMed

LinkOut - more resources