Determination of the complete set of optical parameters of micron-sized polycrystalline CH3NH3PbI3−xClx films from the oscillating transmittance and reflectance spectra
The complete set of optical parameters of micron-sized polycrystalline CH _3 NH _3 PbI _3−x Cl _x films deposited by the vacuum co-evaporation of lead iodide and methylammonium chloride is determined by analysis of oscillating optical transmittance and reflectance spectra in the wavelength range 400...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2019-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ab5c46 |
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| author | Gevorkian Zhyrair Matevosyan Lenrik Avjyan Karapet Harutyunyan Valeri Aleksanyan Eduard Manukyan Khachatur |
| author_facet | Gevorkian Zhyrair Matevosyan Lenrik Avjyan Karapet Harutyunyan Valeri Aleksanyan Eduard Manukyan Khachatur |
| author_sort | Gevorkian Zhyrair |
| collection | DOAJ |
| description | The complete set of optical parameters of micron-sized polycrystalline CH _3 NH _3 PbI _3−x Cl _x films deposited by the vacuum co-evaporation of lead iodide and methylammonium chloride is determined by analysis of oscillating optical transmittance and reflectance spectra in the wavelength range 400–1000 nm. It is shown that for a medium and weak absorption region the envelope method is valid for the extraction of refractive index, extinction and absorption coefficient when is using only transmittance spectra. As well thickness of the film is determined from transmittance and reflectance spectra with interference-effect. The absorption coefficient for the strong absorption region and optical band gap (direct transition at E _opt = 1.62 eV) are calculated based on transmittance and reflectance spectra by using conventional approximated formulas. |
| first_indexed | 2024-03-12T15:46:47Z |
| format | Article |
| id | doaj.art-30dbac33158d4104b1887ea4d0afcb66 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:46:47Z |
| publishDate | 2019-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-30dbac33158d4104b1887ea4d0afcb662023-08-09T15:23:19ZengIOP PublishingMaterials Research Express2053-15912019-01-017101640810.1088/2053-1591/ab5c46Determination of the complete set of optical parameters of micron-sized polycrystalline CH3NH3PbI3−xClx films from the oscillating transmittance and reflectance spectraGevorkian Zhyrair0Matevosyan Lenrik1Avjyan Karapet2https://orcid.org/0000-0002-5893-0687Harutyunyan Valeri3https://orcid.org/0000-0002-8015-5891Aleksanyan Eduard4Manukyan Khachatur5Institute of Radiophysics and Electronics, 0203 Ashtarak, Armenia; Yerevan Physics Institute, 0036 Yerevan, ArmeniaInstitute of Radiophysics and Electronics, 0203 Ashtarak, ArmeniaInstitute of Radiophysics and Electronics, 0203 Ashtarak, ArmeniaYerevan State University , 0025 Yerevan, ArmeniaYerevan Physics Institute, 0036 Yerevan, ArmeniaUniversity of Notre Dame , Notre Dame, IN 46556, United States of AmericaThe complete set of optical parameters of micron-sized polycrystalline CH _3 NH _3 PbI _3−x Cl _x films deposited by the vacuum co-evaporation of lead iodide and methylammonium chloride is determined by analysis of oscillating optical transmittance and reflectance spectra in the wavelength range 400–1000 nm. It is shown that for a medium and weak absorption region the envelope method is valid for the extraction of refractive index, extinction and absorption coefficient when is using only transmittance spectra. As well thickness of the film is determined from transmittance and reflectance spectra with interference-effect. The absorption coefficient for the strong absorption region and optical band gap (direct transition at E _opt = 1.62 eV) are calculated based on transmittance and reflectance spectra by using conventional approximated formulas.https://doi.org/10.1088/2053-1591/ab5c46CH3NH3PbI3−xClx filmco-evaporationtransmittance and reflectance spectraoptical parametersenvelope method |
| spellingShingle | Gevorkian Zhyrair Matevosyan Lenrik Avjyan Karapet Harutyunyan Valeri Aleksanyan Eduard Manukyan Khachatur Determination of the complete set of optical parameters of micron-sized polycrystalline CH3NH3PbI3−xClx films from the oscillating transmittance and reflectance spectra Materials Research Express CH3NH3PbI3−xClx film co-evaporation transmittance and reflectance spectra optical parameters envelope method |
| title | Determination of the complete set of optical parameters of micron-sized polycrystalline CH3NH3PbI3−xClx films from the oscillating transmittance and reflectance spectra |
| title_full | Determination of the complete set of optical parameters of micron-sized polycrystalline CH3NH3PbI3−xClx films from the oscillating transmittance and reflectance spectra |
| title_fullStr | Determination of the complete set of optical parameters of micron-sized polycrystalline CH3NH3PbI3−xClx films from the oscillating transmittance and reflectance spectra |
| title_full_unstemmed | Determination of the complete set of optical parameters of micron-sized polycrystalline CH3NH3PbI3−xClx films from the oscillating transmittance and reflectance spectra |
| title_short | Determination of the complete set of optical parameters of micron-sized polycrystalline CH3NH3PbI3−xClx films from the oscillating transmittance and reflectance spectra |
| title_sort | determination of the complete set of optical parameters of micron sized polycrystalline ch3nh3pbi3 xclx films from the oscillating transmittance and reflectance spectra |
| topic | CH3NH3PbI3−xClx film co-evaporation transmittance and reflectance spectra optical parameters envelope method |
| url | https://doi.org/10.1088/2053-1591/ab5c46 |
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