Understanding the structure, bonding and reactions of nanocrystalline semiconductors: a novel high-resolution instrumental method of solid-state synchronous luminescence spectroscopy

Samokhvalov, Alexander

doi:10.1039/d0cp06709a

Cited by 4 publications

(1 citation statement)

References 109 publications

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“…The Gummel iteration method is a decoupled iteration method equivalent to the nonlinear block Gauss-Seidel iteration. It decouples the system of equations [9]. First fix φ p and φ n to solve Poisson equation ( 1), then select the updated electrostatic potential ψ, and solve equations ( 2) and (3) in turn.…”

Section: Gummel Iterationmentioning

confidence: 99%

Numerical Simulation Analysis Mathematics of Fluid Mechanics for Semiconductor Circuit Breaker

Liu

2021

Applied Mathematics and Nonlinear Sciences

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The paper derives the current-voltage relationship in the semiconductor circuit breaker based on the equation of fluid mechanics which has application for safe and water access. Then, the paper proposes a Newton iterative method based on the finite element analysis method to solve the nonlinear algebraic equation relationship in the semiconductor circuit breaker. At the same time, the paper constructed a coupled numerical model based on the hydrodynamic equations and applied it to the pulse current prediction. Experiments have proved that the algorithm can realize large-scale open-circuit switching current forecast, and the algorithm has high efficiency and accuracy.

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Section: Gummel Iterationmentioning

confidence: 99%

Numerical Simulation Analysis Mathematics of Fluid Mechanics for Semiconductor Circuit Breaker

Liu

2021

Applied Mathematics and Nonlinear Sciences

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Investigation of linear and non-linear optical features of crystalline and non-crystalline iron oxide thin films for optoelectronic purposes

Mahmoud,

Galal Amin,

Akl

et al. 2023

Physica B: Condensed Matter

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Fast electronic trapping and de-trapping by mid-gap states in CH3NH3PbCl3 single crystal

Wang

Sun

Shi

2023

Applied Physics Letters

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The assumed existence of mid-gap states and their roles acting as electronic traps in lead halide perovskites are under intensive discussion. Yet, knowledge about their physical characteristics remains limited due to the lack of directly accessed optical evidence. Here, we report direct access of spectroscopic responses by mid-gap states in one prototypical metal halide perovskite, CH3NH3PbCl3 single crystal. Mid-gap electronic trapping shown by sub-gap absorption and photoluminescence quenching is demonstrated. Quenching of the inter-band photoluminescence leads to instantaneous broadening in the energetic distributions of the mid-gap, making it hard to determine the energy of each individual mid-gap state. Therefore, the subsequent mid-gap luminescence following electronic de-trapping shows largely increased spectral linewidth and varied luminescence maxima energy. Time-resolved photoluminescence revealed the fast trapping and de-trapping kinetics by mid-gap states in the CH3NH3PbCl3 single crystal. By combining existing knowledge about mid-gap states in semiconductor crystals, we define a general on-lattice surface dangling bonds scenario serving as the creation of mid-gap states in the robust CH3NH3PbCl3 single crystal.

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Understanding the structure, bonding and reactions of nanocrystalline semiconductors: a novel high-resolution instrumental method of solid-state synchronous luminescence spectroscopy

Abstract: This Perspective Article describes recent advancements in studies of nanocrystalline metal oxides using novel ultra-high resolution method, solid-state synchronous luminescence spectroscopy (SS-SLS). Semiconductors notably include titanium dioxide and these studies...

Cited by 4 publications

References 109 publications

Numerical Simulation Analysis Mathematics of Fluid Mechanics for Semiconductor Circuit Breaker

Numerical Simulation Analysis Mathematics of Fluid Mechanics for Semiconductor Circuit Breaker

Investigation of linear and non-linear optical features of crystalline and non-crystalline iron oxide thin films for optoelectronic purposes

Fast electronic trapping and de-trapping by mid-gap states in CH3NH3PbCl3 single crystal

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