Effect of modulating the molar ratio of organic to inorganic content on morphology, optical absorption and photoluminescence of perovskite CH3NH3PbBr3 films

Yan, Jun; Ke, Xiaohan; Chen, Yunlin; Zhang, Ao; Zhang, Bing

doi:10.1016/j.apsusc.2015.06.025

Cited by 58 publications

(47 citation statements)

References 26 publications

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“…In the Br 3d spectrum (Figure c), the Br 3d 5/2 has a binding energy 68.6 eV and the peak‐splitting between Br 3d 3/2 and Br 3d 5/2 is 0.9 eV. The binding energy for Br 3d 5/2 and 3d 3/2 are akin to the well‐studied CH 3 NH 3 PbBr 3 , with a slight shift of 0.5 eV, demonstrating that the Br 3d peaks in the spectrum can be assigned to Br − in (CH 3 NH 3 ) 2 PdBr 4 . The signal for Pd 3d in (CH 3 NH 3 ) 2 PdBr 4 is shown in Figure d. The binding energies of Pd 3d 5/2 and 3d 3/2 are 342.4 and 337.2 eV, respectively.…”

Section: Resultsmentioning

confidence: 83%

“…The binding energy of 284.8 eV is due to the adventitious carbon and the peak at higher binding energy of 286.3 eV can be assigned to the C−N bond of the ammonium salts . The N 1s spectrum (Figure b) exhibits a single peak at the position of 402.1 eV, which represents the N in CH 3 NH 3 + . In the Br 3d spectrum (Figure c), the Br 3d 5/2 has a binding energy 68.6 eV and the peak‐splitting between Br 3d 3/2 and Br 3d 5/2 is 0.9 eV.…”

Section: Resultsmentioning

confidence: 98%

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Highly Stable, New, Organic‐Inorganic Perovskite (CH₃NH₃)₂PdBr₄: Synthesis, Structure, and Physical Properties

Liu

Huang

Zhang

et al. 2018

Chemistry A European J

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Lead halide perovskites have attracted striking attention recently, due to their appealing properties. However, toxicity and stability are two main factors restricting their application. In this work, a less toxic and highly stable Pd-based hybrid perovskite was experimentally synthesized, after exploring different experimental conditions. This new hybrid organic-inorganic perovskite (CH NH ) PdBr was found to be an orthorhombic crystal (Cmce, Z=4) with lattice parameters a=8.00, b=7.99, c=18.89 Å. The Cmce symmetry and lattice parameters were confirmed using Pawley refinement and the atoms positions were confirmed based on DFT calculation. This perovskite compound was determined to be a p-type semiconductor, with a resistivity of 102.9 kΩ cm, a carrier concentration of 3.4 ×10 cm , and a mobility of 23.4 cm (V s) . Interestingly, XRD and UV/Vis measurements indicated that the phase of this new perovskite was maintained with an optical gap of 1.91 eV after leaving in air with a high humidity of 60 % for 4 days, and unchanged for months in N atmosphere; much more stable than most existing organic-inorganic perovskites. The synthesis and various characterizations of this work further the understanding of this (CH NH ) PdBr organic-inorganic hybrid perovskite material.

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 98%

Highly Stable, New, Organic‐Inorganic Perovskite (CH₃NH₃)₂PdBr₄: Synthesis, Structure, and Physical Properties

Liu

Huang

Zhang

et al. 2018

Chemistry A European J

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“…Crystalline reflections of the CH 3 NH 3 PbI 3-x Cl x (in curve b) indicate the formation of a tetragonal structure. The relatively strong intensity of the peaks located at 14.0° , 28.4° , 31.8° and 43.2° were observed corresponding to the planes of (110) , (220) , (310) and (330) [18,19]. 1.57 eV, which is pictured according to the expression [20],…”

Section: Resultsmentioning

confidence: 96%

Copper iodide as inorganic hole conductor for perovskite solar cells with different thickness of mesoporous layer and hole transport layer

Huangfu

Zhu

et al. 2015

Applied Surface Science

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“…In the past seven years, their rapid development led to PCE being raised from 3.8% to 22.7% by device optimization, perovskite composition and improved interface engineering [3,4]. The high performance is mainly due to the excellent properties of perovskite materials, such as extinction coefficients, electron and hole bipolar transport, medium band gap, small exciton binding energy and higher carrier diffusion length, etc.…”

Section: Introductionmentioning

confidence: 99%

Highly Uniform Large-Area (100 cm2) Perovskite CH3NH3PbI3 Thin-Films Prepared by Single-Source Thermal Evaporation

et al. 2018

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Abstract:In this work, we report the reproducible preparation method of highly uniform large-area perovskite CH 3 NH 3 PbI 3 thin films by scalable single-source thermal evaporation with the area of 100 cm 2 . The microstructural and optical properties of large-area CH 3 NH 3 PbI 3 thin films were investigated. The dense, uniform, smooth, high crystallinity of large-area perovskite thin film was obtained. The element ratio of Pb/I was close to the ideal stoichiometric ratio of CH 3 NH 3 PbI 3 thin film. These films show a favorable bandgap of 1.58 eV, long and balanced carrier-diffusion lengths. The CH 3 NH 3 PbI 3 thin film perovskite solar cell shows a stable efficiency of 7.73% with almost no hysteresis, indicating a single-source thermal evaporation that is suitable for a large area perovskite solar cell.

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Effect of modulating the molar ratio of organic to inorganic content on morphology, optical absorption and photoluminescence of perovskite CH3NH3PbBr3 films

Cited by 58 publications

References 26 publications

Highly Stable, New, Organic‐Inorganic Perovskite (CH₃NH₃)₂PdBr₄: Synthesis, Structure, and Physical Properties

Highly Stable, New, Organic‐Inorganic Perovskite (CH₃NH₃)₂PdBr₄: Synthesis, Structure, and Physical Properties

Copper iodide as inorganic hole conductor for perovskite solar cells with different thickness of mesoporous layer and hole transport layer

Highly Uniform Large-Area (100 cm2) Perovskite CH3NH3PbI3 Thin-Films Prepared by Single-Source Thermal Evaporation

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Effect of modulating the molar ratio of organic to inorganic content on morphology, optical absorption and photoluminescence of perovskite CH3NH3PbBr3 films

Cited by 58 publications

References 26 publications

Highly Stable, New, Organic‐Inorganic Perovskite (CH3NH3)2PdBr4: Synthesis, Structure, and Physical Properties

Highly Stable, New, Organic‐Inorganic Perovskite (CH3NH3)2PdBr4: Synthesis, Structure, and Physical Properties

Copper iodide as inorganic hole conductor for perovskite solar cells with different thickness of mesoporous layer and hole transport layer

Highly Uniform Large-Area (100 cm2) Perovskite CH3NH3PbI3 Thin-Films Prepared by Single-Source Thermal Evaporation

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Product

Resources

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Highly Stable, New, Organic‐Inorganic Perovskite (CH₃NH₃)₂PdBr₄: Synthesis, Structure, and Physical Properties

Highly Stable, New, Organic‐Inorganic Perovskite (CH₃NH₃)₂PdBr₄: Synthesis, Structure, and Physical Properties