A5054374275- Silicon and Solar Cell Technologies
- Hydraulic Fracturing and Reservoir Analysis
- Drilling and Well Engineering
- Semiconductor materials and devices
- Semiconductor materials and interfaces
- Thin-Film Transistor Technologies
- Integrated Circuits and Semiconductor Failure Analysis
- Photovoltaic System Optimization Techniques
- solar cell performance optimization
- Reservoir Engineering and Simulation Methods
- Advanced Chemical Physics Studies
- Groundwater flow and contamination studies
- Advancements in Photolithography Techniques
- Silicon Nanostructures and Photoluminescence
- Seismic Imaging and Inversion Techniques
- Advanced Surface Polishing Techniques
- Hydrocarbon exploration and reservoir analysis
- Copper Interconnects and Reliability
- Optical Coatings and Gratings
- Nanowire Synthesis and Applications
- Acoustic Wave Resonator Technologies
- Atmospheric Ozone and Climate
- Ferroelectric and Negative Capacitance Devices
- Ferroelectric and Piezoelectric Materials
- Advancements in Semiconductor Devices and Circuit Design
Changzhou University
2020-2025
Beijing Solar Energy Research Institute
2015-2023
Hunan Xiangdian Test Research Institute (China)
2023
Shanxi Datong University
2023
Research Institute of Petroleum Exploration and Development
2017-2020
China National Petroleum Corporation (China)
2019-2020
Ministry of Science and Technology of the People's Republic of China
2019
Applied Materials (Germany)
2006
Semiconductor Manufacturing International (Italy)
2005
Texas Instruments (United States)
1998-2003
Flexible solar cells have a lot of market potential for application in photovoltaics integrated into buildings and wearable electronics because they are lightweight, shockproof self-powered. Silicon been successfully used large power plants. However, despite the efforts made more than 50 years, there has no notable progress development flexible silicon their rigidity1-4. Here we provide strategy fabricating large-scale, foldable wafers manufacturing cells. A textured crystalline wafer always...
Abstract Wide‐bandgap perovskite solar cells, which are essential for tandem photovoltaics, easily suffer from open‐circuit voltage ( V OC ) losses due to challenges in suppressing halogen heterogeneity and defect‐related nonradiative recombination the active layers. Herein, a multifunctional fluorine‐containing additive of 8‐pentafluorobenzyloxy quinoline (8‐PFBQ) is explored modulate crystallization defect properties wide‐bandgap (1.67 eV) perovskites, enhancing both efficiency operational...
Abstract In this work, we report on a significant breakthrough in fabricating the critical tunnel oxide layer of passivated contacts (TOPCon) high‐efficiency solar cells compatible with high‐volume manufacturing. We show that can be controlled at atomic scale, enabled by an innovative tube‐type industrial plasma‐assisted deposition (PEALD) method. combination situ doped poly‐Si ( n + ) grown plasma‐enhanced chemical vapor deposition, uniform, ultrathin ~1.3 nm SiO x is obtained c ‐Si/SiO...
The process of ball milling and the materials that compose planetary mills are highly complex, existing research on change in ball-milling energy is not mature. theoretical model a mill was established for first time to simulate motion, collision process, transfer, temperature small balls during process. Furthermore, by comparing information with experimental data mill, motion trajectory grinding ball, transfer between were studied, micro discussed. This study provides certain basis...
n-Type tunnel oxide passivated contact (TOPCon) solar cells are expected to dominate the global photovoltaic market in next decade, primarily owing their rapidly increasing power conversion efficiency (PCE). However, acids generated from encapsulant hydrolysis under damp-heat (DH) conditions significantly impair reliability of TOPCon cells. This study evaluated degradation behavior an accelerated test ambient acid environment. Exposure acetic for 48 h resulted average peel force decreasing...
Summary Hydraulic fracturing is an essential technology for improving reservoir permeability and enhancing gas well productivity. The experiments have confirmed that it feasible to operate hydraulic in hydrate reservoirs. Consequently, clarifying the impact of fracture on productivity has been a crucial issue developing reservoir. This study established numerical simulation model based embedded discrete (EDFM) using fractured vertical well. To verify accuracy newly-developed model, local...
The reactions of Cs(n2PJ), n=8, 9, J=1/2, 3/2 with H2 were studied by laser induced fluorescence the nascent product. No difference was found in reactivity J=1/2 and states. energies available to reaction products 11.5 16.9 kcal/mol for n=8 9 states, respectively. CsH v=0 1 states but could not be detected any higher vibrational state. v=0/v=1 population ratios 1/0.33 (n=8) 1/0.42 (n=9). rotational temperatures approximately same as ambient temperature cell. Thus about 90% energy is released...
We demonstrate the bit functionality of a low-voltage, embedded ferroelectric random-access memory constructed using 130 nm gate and five-level Cu/FSG interconnect process. By inserting two additional masks required for eFRAM module into this logic flow, we have co-integrated SRAM on single wafer.
We have devised a novel antenna structure that distinguishes the regimes of charging during an etch process. Using this technique, we show instances in Inductively Coupled Plasma (ICP) metal where occurs exclusively clear or overetch both depending on process and hardware. seen ultra-thin gate (21 /spl Aring/) devices are severely degraded compared to thicker (25-32 under certain ICP conditions. Remote Nitrided (RPN) oxides shown be robust down 25 Aring/ with respect effects. report here for...
The phase control of molecular absorption, first proposed by Shapiro, Hepburn, and Brumer was accomplished with CH3I using the technique Chen, Yin, Elliott. Red light (λ near 603 nm) focused in a cell containing gas at pressure around 1 Torr. emerging light, coherent mixture fundamental third harmonic 201 nm), refocused on beam multiphoton ionization detected. Ionization two simultaneous processes: uv photon absorption followed red photons (1+2 process) an three more (3+2 process). Because...
The measured switched polarization properties of integrated Pb(Zr,Ti)O3 (PZT) capacitors arrays have been found to show a small dependence on individual capacitor size in the range from 0.17 and 100 μm2. These thin (90 nm) PZT low voltage switching with saturation <1.8 V for smallest (0.17 μm2) still larger than 25 μC/cm2. stack consisted TiAlN hardmask/Ir/IrOx/PZT/Ir/TiAlN either SiO2 dielectric or W plugs. was patterned using 248 nm lithography etched only one mask. For wafers...
The first step in the reaction of O(3P) with HCCH is formation a complex, HCCHO which lives at least as long rotational period. complex has two channels dissociation, HCCO+H or 3B1CH2+CO. To find out more about this H and CO products were probed by laser-induced fluorescence. Earlier determinations that branching ratio between 1.4 are confirmed but it shown DCCD 0.9. This explained assuming 1,2 migration hindered severely deuteration than hydrogen atom dissociation. average translational...
Abstract Based on a traditional acid etch system (i.e., HNO 3 /HF), complex texture comprising microscale and submicroscale structures was produced the surface of diamond‐wire‐sawn (DWS) multicrystalline Si (mc‐Si) wafer, upon whose it is typically difficult to form an effective for suppressing reflection incident light. Immersing as‐cut wafer into HF/HNO /AgNO solution introduced large number artificial defects onto surface. A subsequent /HF induced micron expanded from original DWS‐induced...
We have demonstrated that the scaling of IrO x (Pb(Zr, Ti)O 3 :PZT)/Ir capacitors can be extended into submicron regime. The /PZT/Ir were fabricated using a one-mask stack-etch process, integrated with an SiO 2 interlayer dielectric, and contacted Al metallization. aggregate electrical properties PZT capacitor arrays are shown to nearly independent individual area in range between 10 µm 0.12 . In particular, switched polarization values more than 30 µC/cm obtained for This result suggests...
This is the second in a series of papers on reaction O(3P) with alkynes which internal state distribution some products are studied. The first paper dealt acetylene whose two product channels CO+CH2 and H+HCCO. present deals reactions higher alkynes; however, just CO release H atom were was rotationally vibrationally cold every case. We therefore infer that, except possibly for acetylene, initial ketocarbene undergoes intersystem crossing to singlet isomerizes substituted ketene then...
Full-size (156 ×156 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ) interdigitated back contact (IBC) solar cells have been developed with conventional industry processes. With PC1D simulation and short-flow experiment verification, we found that the tunnel junction shunting of rear n xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> /p could be mitigated significantly by controlling boron surface concentration; therefore, it is...
Based on the property discontinuity in radial direction, this paper develops a new composite model to simulate productivity of volume fractured wells naturally reservoirs. The analytical solution is derived detail and its accuracy verified by same model’s numerical solution. Detailed analyses traditional transient cumulative rate are provided for model. Results show that fracturing mainly contributes early-flow period’s production rate. As interregional diffusivity ratio increases or...
A fractured horizontal well is an effective technology to obtain hydrocarbons from tight reservoirs. In this study, a new semi-analytical model for intercepted by multiple finite-conductivity reorientation fractures was developed in anisotropic rectangular reservoir. Firstly, establish the flow equation of fracture, all were discretized combining nodal analysis technique and fracture-wing method. Secondly, through coupling reservoir solution fracture solution, along derived Laplace domain,...
Reorientation fractures may be formed in soft and shallow formations during fracturing stimulation then affect well productivity. The principal focus of this study is on the productivity analysis for a horizontal with multiple reorientation an anisotropic reservoir. Combining nodal technique fracture-wing method, semi-analytical model finite-conductivity was established to calculate its dimensionless index derivative production evaluation. A classic case literature selected verify accuracy...