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Determination of Defects in Planar CH3NH3PbI3 Perovskite Solar Cells Using a SCAPS-1D Simulation Tool
VNU Journal of Science: Mathematics - Physics - Tập 39 Số 1 - 2023
Nguyen Duc Cuong
In this work, electrical simulations of planar CH3NH3PbI3 solar cells using a SCAPS-1D (a Solar Cell Capacitance Simulator) simulation tool were performed to determine the density of defects based on the performance parameters and J-V characteristics of actual experimental planar CH3NH3PbI3 solar cells. Two types of defects (bulk and interface) were introduced into the simulation model. The densit... hiện toàn bộ
Optical Simulation of Planar CH3NH3PbI3 Perovskite Solar Cells
VNU Journal of Science: Mathematics - Physics - Tập 35 Số 3 - 2019
Nguyen Duc Cuong
This article presents optical simulation results of planar CH3NH3PbI3 solar cells using a MATLAB script developed by McGehee’s group (Stanford University). The device structure is composed of FTO/HEL/AL/EEL/LiF/Al, where HEL is the hole-extraction layer, AL is the active layer (CH3NH3PbI3), and EEL is the electron-extraction layer. In this MATLAB script, the transfer matrix method was used, where ... hiện toàn bộ
Research and design solar cell systems for electric car charging stations and parking lots
Tạp chí Nghiên cứu Khoa học và Công nghệ quân sự - Tập 85 - Trang 103-110 - 2023
Hữu Thuấn Mai, Trọng Tấn Vũ
Khủng hoảng năng lượng trên toàn cầu hiện nay đã gây ra một hệ lụy vô cùng lớn, giá xăng, dầu tăng cao buộc chính quyền các nước cần quan tâm đặc biệt tới lĩnh vực này. Gần đây, giá xăng, dầu tại Việt Nam tăng kỷ lục trên 30.000 VNĐ/lít, buộc người dân phải thay đổi nhu cầu, thói quen đi lại của mình. Với chi phí vận hành phù hợp, xe ô tô điện (EC – Electric Car) có thể được xem như là một giải ph... hiện toàn bộ
#Solar power systems; Electric car charging station; Parking; Electric car.
Fabrication of Organolead Iodide Perovskite Solar Cells with Niobium-doped Titanium Dioxide as Compact Layer
Communications in Physics - Tập 27 Số 2 - 2017
Nguyen Tran Thuat, Phan Vu Thi Van, Dang Tuan Linh, Pham Thu Trang, Bui Bao Thoa, Nguyen Ngoc Minh, Hoang Ngoc Lam Huong, Truong Thanh Tu, Nguyen Minh Tu, Nguyen Bao Tran
Organometal halide perovskite materials have shown high potential as light absorbers for photovoltaic applications. In this work, perovskite planar solar cells were fabricated on corning substrates with the structure as follows: the first layer made of tantalum-doped tin oxide as transparent contact material, followed by sputtering niobium-doped titanium oxide as the compact electron transport lay... hiện toàn bộ
#perovskite #CH3NH3PbI3 #solar cells #NTO #TTO #CuSCN
Characterization and Microwave Absorption Properties of Lead-Free Bi0.5(Na0.80K0.20)0.5TiO3 Synthesized by Sol-Gel Method
VNU Journal of Science: Mathematics - Physics - Tập 38 Số 1 - 2022
Nguyen Dang Co, Bui Dinh Tu
Lead-free Bi0.5(Na0.80K0.20)0.5TiO3 (BNKT) particles were synthesized by using  sol-gel method. The samples were investigated by X-ray diffractometry (XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), and vibrating sample magnetometer (VSM). The absorption of microwaves of the lead-free BNKT powders is determined from the magnetic (permeability) and dielectric (... hiện toàn bộ
Optical Simulations of Organic Solar Cells with PBDB-T:ITIC and PTB7:PC71BM Photoactive Layers
VNU Journal of Science: Mathematics - Physics - Tập 41 Số 1 - Trang - 2025
Nguyen Duc Cuong, Than Thi Thu Ha, Hoang Thi Hoa, Vu Thi Thao, Nguyen Tuan Canh, Nguyen Phuong Hoai Nam
In this work, we present a comprehensive optical simulation analysis of bulk-heterojunction (BHJ) organic solar cells where PBDB-T:ITIC incorporated with PTB7:PC71BM blends served as photoactive layers. The simulations were performed using transfer matrix method implemented through a MATLAB script that is developed by McGehee’s research group at Stanford University. This method involves calculatin... hiện toàn bộ
Effect of Sm and Mn Co-doping on the Crystal Structure and Magnetic Properties of \(\text{BiFeO}_{3}\) Polycrystalline Ceramics
Communications in Physics - Tập 30 Số 3 - 2020
Hong Nguyen Thi Minh, Tho Pham Truong, Hai Pham Van, Hao Nguyen Van, Thao Truong Thi
The crystal structure, phonon vibration, microstructure, and magnetic properties have been investigated in multiferroics Bi0.9Sm0.1Fe1-xMnxO3 for \(x = 0.02 – 0.1\). The structural analysis by XRD and Rietveld refinement suggest that Mn doping compounds crystallize in the polar R3c rhombohedral symmetry (isostructural with BiFeO3). Raman analysis confirms no structural transformation but the chang... hiện toàn bộ
#BiFeO3-multiferroics #crystal structure #magnetic properties.
Enhancement of Magnetic Field Strength and Gradient Produced by an Array of Micro-sized Parallelepiped Magnets
VNU Journal of Science: Mathematics - Physics - Tập 39 Số 1 - 2023
Nguyen Huy Tiep, Bui Dinh Tu, Le Viet Cuong
In this work, we carried out survey on magnetic field strength and gradient in space around arrays of micro-sized parallelepipedic magnets by simulation and calculation. Magnetic field distributions are a function of magnet’s size and position with respect to magnet’s surface. Our purpose is to explain how magnetic interactions evolve while dimensions of magnetic sources are reduced. Firstly, the ... hiện toàn bộ
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