Time-resolved photoluminescence studies on localization effects in orthorhombic phase of CH3NH3PbI3 perovskite thin film

Cheng, Fu Jen; Hu, Sheng-Yao; Chen, L.Y.; Lee, Y.C.; Yin, Guangzhi; Tiong, K. K.; Shen, Ji Lin

doi:10.1016/j.jlumin.2018.01.054

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…2). To fit the temperature-dependent PL intensities well, the Arrhenius plot of the PL integrated intensity was taken into consideration for two non-radiative recombination channels shown as in [30,31]…”

Section: Resultsmentioning

confidence: 99%

Photoluminescence properties of hybrid perovskites in solar cells with TiO₂ and Mg_0.2Zn_0.8O electron transport layers

Čerškus¹,

Ašmontas²,

Petrauskas³

et al. 2020

Lith. J. Phys.

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This paper presents a study of the photoluminescence properties of hybrid perovskite films deposited on titanium and magnesium zinc oxide films, as electron transport layers, using the spin-coating technique. The subject of the investigation was continuous wave photoluminescence versus temperature, excitation power and transient photoluminescence. Moreover, the paper discusses possible carrier recombination mechanisms. Complex temporal decay was approximated through the use of several models, but only the four-exponent model and the model using the sum of two hyperbolic functions provided a good agreement with the experimental data. The first attempt to replace titanium dioxide with magnesium zinc oxide in conjunction with the perovskite layer showed improved optical properties such as a weaker non-radiative recombination process and a longer decay time constant.

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Section: Resultsmentioning

confidence: 99%

Photoluminescence properties of hybrid perovskites in solar cells with TiO₂ and Mg_0.2Zn_0.8O electron transport layers

Čerškus¹,

Ašmontas²,

Petrauskas³

et al. 2020

Lith. J. Phys.

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First-principles calculations into electronic, and excitonic effects of CH3NH3PbX3 (X = Br, I) perovskite solar cells

Thi Han,

Le Manh,

Khuong Dien

2024

Physica B: Condensed Matter

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Density Functional Theory Estimate of Halide Perovskite Band Gap: When Spin Orbit Coupling Helps

2022

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The description of the band gap of halide perovskites at the level of density functional theory (DFT) has been subject of several studies but still presents significant problems and deviations from experimental values. Various approaches have been proposed, including the use of system-specific hybrid functionals with a variable amount of exact exchange or the explicit inclusion of spin–orbit coupling (SOC) effects. In this work, we present a pragmatic recipe to compute the band gap of halide perovskites with a minimum average error. The recipe is tested on a set of 36 halide perovskites of the type ABX3 [A = Cs, methyl-ammonium (MA), and formamidinium (FA); B = Ge, Sn, and Pb; and X = Cl, Br, and I] for which experimental estimates of the band gap have been reported in the literature. Upon assessment of the accuracy of commonly used DFT functionals and the analysis of their performances based on error and statistical analysis, we suggest a strategy to compute band gaps in halide perovskites with a single functional. This is based on the use of the hybrid HSE06 functional where SOC is included exclusively for Pb-containing compounds. The results are rationalized in terms of the materials’ chemical nature and are corroborated by the prediction of their expected efficiencies in solar cells. The calculated efficiencies from band gaps obtained with the proposed approach closely follow the experimental trend, demonstrating the importance of adopting a reliable but material-independent computational strategy to screen new halide perovskite materials for solar energy conversion.

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Time-resolved photoluminescence studies on localization effects in orthorhombic phase of CH3NH3PbI3 perovskite thin film

Cited by 3 publications

References 25 publications

Photoluminescence properties of hybrid perovskites in solar cells with TiO₂ and Mg_0.2Zn_0.8O electron transport layers

Photoluminescence properties of hybrid perovskites in solar cells with TiO₂ and Mg_0.2Zn_0.8O electron transport layers

First-principles calculations into electronic, and excitonic effects of CH3NH3PbX3 (X = Br, I) perovskite solar cells

Density Functional Theory Estimate of Halide Perovskite Band Gap: When Spin Orbit Coupling Helps

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Time-resolved photoluminescence studies on localization effects in orthorhombic phase of CH3NH3PbI3 perovskite thin film

Cited by 3 publications

References 25 publications

Photoluminescence properties of hybrid perovskites in solar cells with TiO2 and Mg0.2Zn0.8O electron transport layers

Photoluminescence properties of hybrid perovskites in solar cells with TiO2 and Mg0.2Zn0.8O electron transport layers

First-principles calculations into electronic, and excitonic effects of CH3NH3PbX3 (X = Br, I) perovskite solar cells

Density Functional Theory Estimate of Halide Perovskite Band Gap: When Spin Orbit Coupling Helps

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Photoluminescence properties of hybrid perovskites in solar cells with TiO₂ and Mg_0.2Zn_0.8O electron transport layers

Photoluminescence properties of hybrid perovskites in solar cells with TiO₂ and Mg_0.2Zn_0.8O electron transport layers