Interfacial Voids Trigger Carbon-Based, All-Inorganic CsPbIBr2 Perovskite Solar Cells with Photovoltage Exceeding 1.33 V

Chen, Dazheng; Zhang, Zeyang; Chen, Dandan; Chai, Wenming; Zhang, Chunfu; Hao, Yue

doi:10.1007/s40820-020-00425-1

Cited by 103 publications

(74 citation statements)

References 57 publications

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“…Tan et al [20] reported a CsPbIBr 2 PSC with a PCE of 9.25% by incorporating Li + ions into a CsPbIBr 2 lattice. More recently, we found that interfacial voids can boost the V oc of a CsPbIBr 2 PSC to 1.338 V, coupled with a PCE of 10.20% [21].…”

Section: Introductionmentioning

confidence: 90%

Slow halide exchange in CsPbIBr2 films for high-efficiency, carbon-based, all-inorganic perovskite solar cells

Zhang

Chen

et al. 2021

Sci. China Mater.

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Halide exchange offers a versatile way to modify the properties of halide perovskites, but it is particularly challenging to slow the reaction rate to restrain defect growth in the products. Herein, we propose a slow halide exchange strategy to simultaneously fine-tune the optical and microstructural characteristics of CsPbIBr 2 films by physically pairing CsPbIBr 2 and CH 3 NH 3 PbI 3 films. Once a proper heating treatment is applied, halide exchange of Br − and I − ions between the films is activated, and the reaction rate can be well-controlled by the heating recipe, in which a high temperature can accelerate the exchange reaction, while a low temperature slows or stops it. By using an optimal halide exchange temperature (110°C) and time (2 h), the parent CsPbIBr 2 film was transformed into high-quality CsPbI 1+x Br 2−x film, featuring an extended absorption onset from 590 to 625 nm, coarsened grains, improved crystallinity, reduced surface roughness, suppressed halide phase segregation, and identical stability to the pristine film. Accordingly, the efficiency of a carbon-based, all-inorganic perovskite solar cell (PSC) was boosted to 10.94%, which was much higher than that of the pristine CsPbIBr 2 film (8.21%). The CsPbI 1+x Br 2−x PSC also possessed excellent tolerance against heat and moisture stresses.

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Section: Introductionmentioning

confidence: 90%

Slow halide exchange in CsPbIBr2 films for high-efficiency, carbon-based, all-inorganic perovskite solar cells

Zhang

Chen

et al. 2021

Sci. China Mater.

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“…e higher the value of the stray current is, the greater the risk of DC bias will be. erefore, the geoelectric field caused by the stray current can be taken as the research object [22,23]. e calculation of the DC current at the neutral point of the main transformer in the urban area is divided into two parts: one part is the calculation of the geoelectric field and the other part is the calculation of the DC current of the transformer neutral point by combining the known ground electric field with the relevant theory of the power system.…”

Section: Influencing Factors Of DC Current At the Neutral Point Of The Main Transformer In The Urban Areamentioning

confidence: 99%

Calculation and Analysis of DC Magnetic Bias Current of Urban Main Transformer under the Action of Stray Current

Chen

2021

Mobile Information Systems

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The stray current generated by subway running into the ground makes the main transformer in the urban area in a direct current (DC) bias state. First, the mathematical model of the metro stray current field is established and the Galerkin finite element method is applied to calculate the model. Then, the dynamic model of the stray current-induced geoelectric field under different working conditions is established by using ANSYS software, and the three-dimensional numerical simulation study of the stray current-induced geoelectric field of the subway is carried out. Finally, taking the Urumqi subway in Xinjiang as an example, the stray current-induced geoelectric field is calculated and simulated, and the correctness of the model is verified by comparing with the measured data of DC magnetic bias in the urban substation. The research can provide useful reference for the calculation and treatment of DC bias of the main transformer in the urban area under the action of stray current.

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“…The importance of the drug sensing system for the incomplete diagnosis of drug concentrations to normal cells is too great [20][21][22][23]. Also, different methods were developed for the detection of different drug and biomaterials [4,[24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Study the Adsorption of Letrozole Drug on the Silicon Doped Graphdiyne Monolayer: a DFT Investigation

Karbakhshzadeh

Derakhshande

Farhami

et al. 2021

Silicon

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In the current study, by employing first-principles computations, the adsorption behavior of letrozole (LET) was investigated on the pristine graphdiyne nanosheet (GDY) as well as Si-doped graphdiyne (SiGDY). According to the adsorption energy, charge transfer value, and the change in the bang gap energy, the tendency of the pristine GDY towards LET is insignificant. However, the interaction of LET with SiGDY was strong and the adsorption energy was approximately − 19.20 kcal/mol. In addition, the associated electrical conductivity with SiGDY increased by approximately 23.53 % following the adsorption of LET. The results show that SiGDY can be employed as an electronic sensor to detect LET. Furthermore, LET is detected by SiGDY in the water phase based on the magnitude of solvation energy. Finally, a considerable charge-transfer between LET and SiGDY is a precondition for the adsorption of the LET molecule with proper binding energies, which delivers the Si atoms with a significant positive charge.

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Interfacial Voids Trigger Carbon-Based, All-Inorganic CsPbIBr2 Perovskite Solar Cells with Photovoltage Exceeding 1.33 V

Cited by 103 publications

References 57 publications

Slow halide exchange in CsPbIBr2 films for high-efficiency, carbon-based, all-inorganic perovskite solar cells

Slow halide exchange in CsPbIBr2 films for high-efficiency, carbon-based, all-inorganic perovskite solar cells

Calculation and Analysis of DC Magnetic Bias Current of Urban Main Transformer under the Action of Stray Current

Study the Adsorption of Letrozole Drug on the Silicon Doped Graphdiyne Monolayer: a DFT Investigation

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