Photoluminescence Spectroscopy

Aoki, Takeshi

doi:10.1002/0471266965.com058.pub2

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…However, ARPES and STS measurements have not been established in these systems yet. Photoluminescence (PL) measurement [22,23] provides information about the optical properties of a material, including its excitation and emission spectra, which are essential for understanding the efficiency and performance of photovoltaic devices. So far, the PL measurement has been done for the case of orthorhombic CH(NH 2 ) 2 SnI 3 .…”

mentioning

confidence: 99%

Electronic and Optical Properties of CH₃NH₃SnI₃ and CH(NH₂)₂SnI₃ Perovskite Solar Cell

Han

Dien

Lin

2023

Physica Rapid Research Ltrs

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Solar cell systems are now widely recognized as one of the most impressive structures in engineering applications and basic sciences because they can deliver eco-friendly and renewable energy [1,2] while also being efficient due to the distinct route to convert photon energy into electricity. [1][2][3] Organic-inorganic hybrid perovskite solar cells, [4][5][6][7] specifically ABX 3 (where A represents either cation Cs þ or molecule like CH 3 NH 3 þ , B represents cation Ge 2þ , Sn 2þ , or Pb 2þ , and X indicates anion halogen as Cl À , Br À , I À ) have garnered significant attention for energy harvesting applications due to their exceptional photoelectronic properties. [8,9] However, the presence of lead (Pb) [10,11] in these materials presents safety concerns during synthesis and applications. To reduce toxicity, tin (Sn) is being explored as a potential replacement for lead in the metal halide perovskite structure due to its similar valence electrons for bonding. The orthorhombic phases of CH 3 NH 3 SnI 3 and CH(NH 2 ) 2 SnI 3 perovskites are particularly promising candidates for photovoltaic applications, having attracted a lot of theoretical and experimental investigations. [12][13][14][15] The orthorhombic phases of CH 3 NH 3 SnI 3 and CH(NH 2 ) 2 SnI 3 perovskites have been successfully obtained through various experimental investigations. [15] X-ray diffraction has evaluated the optimal geometric structures of orthorhombic CH(NH 2 ) 2 SnI 3 , [16,17] but no similar measurement has been done for CH 3 NH 3 SnI 3 . Angle-resolved photoemission spectroscopy (ARPES) [18,19] can examine the frequency-dependent energy spectrum at valence states in the electronic band structure, and scanning tunneling spectroscopy (STS) measurement [20,21] allows for identifying the van Hove singularities in both hole and electron states in the density of states (DOS), suggesting the gap value exactly for materials. However, ARPES and STS measurements have not been established in these systems yet. Photoluminescence (PL) measurement [22,23] provides information about the optical properties of a material, including its excitation and emission spectra, which are essential for understanding the efficiency and performance of photovoltaic devices. So far, the PL measurement has been done for the case of orthorhombic CH(NH 2 ) 2 SnI 3 . [15] However, such a measurement has not been reported yet for orthorhombic CH 3 NH 3 SnI 3 .Theoretical calculation utilizing first principles can efficiently predict diverse material properties [5,[24][25][26] and produce accurate results that agree well with experimental measurements. However, the theoretical predictions of the electronic and optical properties of free-lead organic-inorganic perovskite solar cells are still a topic of debate. For instance, Sharma and co-workers [27] used density functional theory (DFT) to predict a direct gap semiconductor of 0.5 eV at the Γ point for the orthorhombic CH 3 NH 3 SnI 3 . In contrast, Feng and Xiao [28] utilized Heyd-Scuseria-Ernzerhof (HSE06) and repo...

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mentioning

confidence: 99%

Electronic and Optical Properties of CH₃NH₃SnI₃ and CH(NH₂)₂SnI₃ Perovskite Solar Cell

Han

Dien

Lin

2023

Physica Rapid Research Ltrs

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“…48 Photoluminescence spectroscopy.-PL spectroscopy is a nondestructive scientific methodology for displaying charge carrier movement and electron-hole recombination ability. [49][50][51] Bandgap changes if quantum confinement increased in photoluminescence. 52 Band gap is calculated by following formula Eg eV 1240 = ( )…”

Section: Lines Lenghtmentioning

confidence: 99%

Exploring the Synergistic Structural and Optical Properties of Co-Precipitated BiCr₂O₄/GO Nanocomposite

Hameed,

Rani,

Habila

et al. 2023

ECS J. Solid State Sci. Technol.

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Binary nanocomposite of BiCr2O4/GO synthesized by co-precipitation method where BiCr2O4 was synthesized by sol-gel and GO was prepared by Hummer’s method has been reported. From XRD analysis, average crystalline size of GO, BiCr2O4 and BiCr2O4/GO are 5.55 nm, 6.85 nm and 5.27 nm respectively. From SEM micrograph it is quite clear that BiCr2O4/GO nanoparticles retain their quasi spherical grains with in the nanocomposite whereas as the presence of Bi, Cr and Si were evident from EDS spectra resulting GO suppressed peak. PL spectra for binary BiCr2O4/GO nanocomposite shows the estimated band gap energy of 3.5 eV which lies in the band gap energy range of GO about 3.1–3.9 eV. Bond formation in BiCr2O4/GO nanocomposite was depicted by Raman band shift. These all results support nanocomposite based nanomaterial suitability for its application in supercapacitor based energy storage materials.

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“…The theoretical predictions in the current research could provide useful information for the experimental measurements. Up to now, the information about the optimal geometric, electronic, and optical properties of graphene-like related systems could be conrmed by high-technique equipment such as X-ray photoelectron spectroscopy (XPS), 80 scanning tunneling microscopy (STM), 81 scanning tunning spectroscopy (STS), 82 scanning tunning electron microscopy (STEM), 83 angle-resolved photoemission spectroscopy (ARPES), 84 photoluminescence spectroscopy (PL) 85 and other optical measurements. 86 Typically, XPS is a powerful technique to determine how many atoms are attached to the group IV monolayer and types of dopants, e.g., the estimated concentration for oxidized carbons and graphitic carbons.…”

Section: These Structures Originated From Vertical Excitations Withmentioning

confidence: 99%

Electronic and optical properties of graphene, silicene, germanene, and their semi-hydrogenated systems

Dien

Lin

et al. 2022

RSC Adv.

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Photoluminescence Spectroscopy

Cited by 6 publications

References 16 publications

Electronic and Optical Properties of CH₃NH₃SnI₃ and CH(NH₂)₂SnI₃ Perovskite Solar Cell

Electronic and Optical Properties of CH₃NH₃SnI₃ and CH(NH₂)₂SnI₃ Perovskite Solar Cell

Exploring the Synergistic Structural and Optical Properties of Co-Precipitated BiCr₂O₄/GO Nanocomposite

Electronic and optical properties of graphene, silicene, germanene, and their semi-hydrogenated systems

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Photoluminescence Spectroscopy

Cited by 6 publications

References 16 publications

Electronic and Optical Properties of CH3NH3SnI3 and CH(NH2)2SnI3 Perovskite Solar Cell

Electronic and Optical Properties of CH3NH3SnI3 and CH(NH2)2SnI3 Perovskite Solar Cell

Exploring the Synergistic Structural and Optical Properties of Co-Precipitated BiCr2O4/GO Nanocomposite

Electronic and optical properties of graphene, silicene, germanene, and their semi-hydrogenated systems

Contact Info

Product

Resources

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Electronic and Optical Properties of CH₃NH₃SnI₃ and CH(NH₂)₂SnI₃ Perovskite Solar Cell

Electronic and Optical Properties of CH₃NH₃SnI₃ and CH(NH₂)₂SnI₃ Perovskite Solar Cell

Exploring the Synergistic Structural and Optical Properties of Co-Precipitated BiCr₂O₄/GO Nanocomposite