Radiative recombination model for BiSeI microcrystals: unveiling deep defects through photoluminescence
Pnictogen chalcohalides are semiconductors that have emerged as promising materials for energy conversion due to their exceptional optoelectronic properties. Their electronic configuration (ns ^2 ), particularly for Bi- and Sb-based compounds, can be a key factor in efficient carrier transport and d...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | JPhys Energy |
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| Online Access: | https://doi.org/10.1088/2515-7655/ad8377 |
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| author | Marc Dolcet Sadurni Jüri Krustok Kristi Timmo Valdek Mikli Rokas Kondrotas Maarja Grossberg-Kuusk Marit Kauk-Kuusik |
| author_facet | Marc Dolcet Sadurni Jüri Krustok Kristi Timmo Valdek Mikli Rokas Kondrotas Maarja Grossberg-Kuusk Marit Kauk-Kuusik |
| author_sort | Marc Dolcet Sadurni |
| collection | DOAJ |
| description | Pnictogen chalcohalides are semiconductors that have emerged as promising materials for energy conversion due to their exceptional optoelectronic properties. Their electronic configuration (ns ^2 ), particularly for Bi- and Sb-based compounds, can be a key factor in efficient carrier transport and defect tolerance, similarly, to Pb-perovskites. In the present study, the Bi-containing chalcohalide, bismuth selenoiodide (BiSeI) was synthesized via isothermal heat treatment of binary precursors in evacuated quartz ampoules. The synthesized BiSeI microcrystals exhibited a characteristic needle-like morphology and a near-stoichiometric composition. Both indirect and direct band gap energies of BiSeI were determined by ultraviolet–visible–near-infrared diffuse reflectance spectroscopy, with room temperature values of 1.17 eV and 1.29 eV, respectively. This study presents the first experimental investigation of the photoluminescence properties of BiSeI microcrystals resulting in a recombination model involving multiple defect states. This work provides valuable insights into the defect structure and recombination mechanisms within BiSeI, paving the way for further exploration of its potential in optoelectronic devices. |
| format | Article |
| id | doaj-art-5ddd37c48c364007bbf94429ec6a3145 |
| institution | OA Journals |
| issn | 2515-7655 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | JPhys Energy |
| spelling | doaj-art-5ddd37c48c364007bbf94429ec6a31452025-08-20T01:47:44ZengIOP PublishingJPhys Energy2515-76552024-01-016404500410.1088/2515-7655/ad8377Radiative recombination model for BiSeI microcrystals: unveiling deep defects through photoluminescenceMarc Dolcet Sadurni0https://orcid.org/0000-0003-0821-1550Jüri Krustok1https://orcid.org/0000-0002-4671-2332Kristi Timmo2https://orcid.org/0000-0001-6054-6783Valdek Mikli3https://orcid.org/0000-0002-2406-3562Rokas Kondrotas4https://orcid.org/0000-0002-1751-7909Maarja Grossberg-Kuusk5https://orcid.org/0000-0003-3357-189XMarit Kauk-Kuusik6https://orcid.org/0000-0003-0071-8568Department of Materials and Environmental Technology, Tallinn University of Technology , Ehitajate tee 5, Tallinn 19086, EstoniaDepartment of Materials and Environmental Technology, Tallinn University of Technology , Ehitajate tee 5, Tallinn 19086, EstoniaDepartment of Materials and Environmental Technology, Tallinn University of Technology , Ehitajate tee 5, Tallinn 19086, EstoniaDepartment of Materials and Environmental Technology, Tallinn University of Technology , Ehitajate tee 5, Tallinn 19086, EstoniaDepartment of Characterisation of Materials Structure, Center for Physical Sciences and Technology , Saulėtekio av. 3, Vilnius 10257, LithuaniaDepartment of Materials and Environmental Technology, Tallinn University of Technology , Ehitajate tee 5, Tallinn 19086, EstoniaDepartment of Materials and Environmental Technology, Tallinn University of Technology , Ehitajate tee 5, Tallinn 19086, EstoniaPnictogen chalcohalides are semiconductors that have emerged as promising materials for energy conversion due to their exceptional optoelectronic properties. Their electronic configuration (ns ^2 ), particularly for Bi- and Sb-based compounds, can be a key factor in efficient carrier transport and defect tolerance, similarly, to Pb-perovskites. In the present study, the Bi-containing chalcohalide, bismuth selenoiodide (BiSeI) was synthesized via isothermal heat treatment of binary precursors in evacuated quartz ampoules. The synthesized BiSeI microcrystals exhibited a characteristic needle-like morphology and a near-stoichiometric composition. Both indirect and direct band gap energies of BiSeI were determined by ultraviolet–visible–near-infrared diffuse reflectance spectroscopy, with room temperature values of 1.17 eV and 1.29 eV, respectively. This study presents the first experimental investigation of the photoluminescence properties of BiSeI microcrystals resulting in a recombination model involving multiple defect states. This work provides valuable insights into the defect structure and recombination mechanisms within BiSeI, paving the way for further exploration of its potential in optoelectronic devices.https://doi.org/10.1088/2515-7655/ad8377bismuth selenoiodidepnictogen chalcohalidesphotoluminescenceBiSeI |
| spellingShingle | Marc Dolcet Sadurni Jüri Krustok Kristi Timmo Valdek Mikli Rokas Kondrotas Maarja Grossberg-Kuusk Marit Kauk-Kuusik Radiative recombination model for BiSeI microcrystals: unveiling deep defects through photoluminescence JPhys Energy bismuth selenoiodide pnictogen chalcohalides photoluminescence BiSeI |
| title | Radiative recombination model for BiSeI microcrystals: unveiling deep defects through photoluminescence |
| title_full | Radiative recombination model for BiSeI microcrystals: unveiling deep defects through photoluminescence |
| title_fullStr | Radiative recombination model for BiSeI microcrystals: unveiling deep defects through photoluminescence |
| title_full_unstemmed | Radiative recombination model for BiSeI microcrystals: unveiling deep defects through photoluminescence |
| title_short | Radiative recombination model for BiSeI microcrystals: unveiling deep defects through photoluminescence |
| title_sort | radiative recombination model for bisei microcrystals unveiling deep defects through photoluminescence |
| topic | bismuth selenoiodide pnictogen chalcohalides photoluminescence BiSeI |
| url | https://doi.org/10.1088/2515-7655/ad8377 |
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