Jiajia Zheng

ORCID: 0000-0002-3658-0807
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About
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Research Areas
  • Heavy metals in environment
  • Chalcogenide Semiconductor Thin Films
  • Quantum Dots Synthesis And Properties
  • Perovskite Materials and Applications
  • Environmental Impact and Sustainability
  • Energy, Environment, Economic Growth
  • Social Acceptance of Renewable Energy
  • Energy and Environment Impacts
  • Geochemistry and Geologic Mapping
  • Analytical chemistry methods development
  • Microplastics and Plastic Pollution
  • biodegradable polymer synthesis and properties
  • Advanced machining processes and optimization
  • Mineral Processing and Grinding
  • Advanced Semiconductor Detectors and Materials
  • Metal Extraction and Bioleaching
  • Heavy Metal Exposure and Toxicity
  • Water Quality and Pollution Assessment
  • Industrial Vision Systems and Defect Detection
  • Network Security and Intrusion Detection
  • Fault Detection and Control Systems
  • Mine drainage and remediation techniques
  • Recycling and Waste Management Techniques
  • Advanced Malware Detection Techniques
  • Mercury impact and mitigation studies

The University of Queensland
2010-2024

Wuhan National Laboratory for Optoelectronics
2021-2023

Huazhong University of Science and Technology
2005-2023

University of California, Santa Barbara
2019-2022

Wuhan Institute of Technology
2021

East China Normal University
2019-2020

Fudan University
2015-2019

Zhongshan Hospital
2019

Shanghai Eighth People Hospital
2015

Jiangsu University
2015

Plastic waste is currently generated at a rate approaching 400 Mt year–1. The amount of plastics accumulating in the environment growing rapidly, yet our understanding its persistence very limited. This Perspective summarizes existing literature on environmental degradation rates and pathways for major types thermoplastic polymers. A metric to harmonize disparate measurements, specific surface (SSDR), implemented used extrapolate half-lives. SSDR values cover wide range, with some...

10.1021/acssuschemeng.9b06635 article EN cc-by ACS Sustainable Chemistry & Engineering 2020-02-03

Short-wave infrared detectors are increasingly important in the fields of autonomous driving, food safety, disease diagnosis, and scientific research. However, mature short-wave cameras such as InGaAs have disadvantage complex heterogeneous integration with complementary metal-oxide-semiconductor (CMOS) readout circuits, leading to high cost low imaging resolution. Herein, a low-cost, high-performance, high-stability Tex Se1-x photodiode detector is reported. The thin film fabricated through...

10.1002/adma.202211522 article EN Advanced Materials 2023-03-27

With the people-oriented medical concept gradually gaining popularity and rapid development of sensor network technology, connected healthcare systems (CHSs) have been proposed to remotely monitor physical condition patients elderly. However, there are many security issues in these systems. Threats from inside outside systems, such as tampering with data, forging nodes, eavesdropping, replay, seriously affect reliability privacy users. After an overview CHSs their threats, this article...

10.1109/mnet.001.1900105 article EN IEEE Network 2019-11-01

Antimony chalcogenides are widely studied as a light-absorbing material due to their merits of low toxicity, efficient cost, and excellent photovoltaic properties. However, the band gaps antimony selenide (approximately 1.1 eV) sulfide 1.7 both deviate from optimal detailed balance gap (∼1.3 for terrestrial single-junction solar cells. Notably, Sb2(S, Se)3 can be tunable in range eV, which cover gap. In this work, vapor transport deposition method with two independent evaporation sources is...

10.1021/acsami.1c10758 article EN ACS Applied Materials & Interfaces 2021-09-23

Abstract Accurate and clear bioimaging is crucial in the field of medical diagnosis. High‐quality requires to avoid effects ambient light as well absorption biological tissues. Nearinfrared (NIR) narrowband detectors located at wavelength from 650 900 nm can meet these requirements; thus, they are potential solution. In this work, we construct a filter‐free self‐power NIR photodetector based on structure n‐CdSe/p‐Sb 2 (S 1‐x ,Se x ) 3 heterojunction, achieve narrow spectral response 735 with...

10.1002/inf2.12237 article EN cc-by InfoMat 2021-08-08

Sb2Se3 has drawn wide attention in thin-film solar cells recent years because of its advantages low-cost, low-toxic, and physicochemically stable properties. The most efficient are based on a CdS/Sb2Se3 heterojunction, but the cliff-like conduction band offset at interface causes detrimental recombination. In this Letter, we apply ZnxCd1-xS to tune alignment. When x is equal 0.163, flatband results an optimal efficiency 7.02%, which absolutely 0.6% higher than control device with pure CdS.

10.1063/5.0030430 article EN Applied Physics Letters 2021-04-26

Abstract Silicon‐based tandem solar cells are regarded as one of the most feasible ways to break single‐junction Shockley–Queisser limit efficiency and further reduce cost electricity. Recently, wide‐bandgap ( ≈ 1.7 eV) perovskite have drawn intense research interest top cell for Si‐based devices. Despite significant progress in device efficiency, unsatisfactory stability perovskites is still a huge concern. Besides halide perovskites, there many inorganic semiconductors worthy...

10.1002/aenm.202200725 article EN Advanced Energy Materials 2022-05-30

A rapid thermal annealing process assists the synthesis of preferred [003]-oriented Se thin film with a large grain size for photovoltaic application.

10.1039/d2fd00070a article EN Faraday Discussions 2022-01-01

10.1007/s11845-015-1371-9 article EN Irish Journal of Medical Science (1971 -) 2015-11-23

Selenium (Se) element is a promising light-harvesting material for solar cells because of the large absorption coefficient and prominent photoconductivity. However, efficiency Se has been stagnated long time owing to suboptimal bandgap (> 1.8 eV) lack proper electron transport layer. In this work, we tune absorber optimal value Shockley-Queisser limit (1.36 by alloying 30% Te with 70% Se. Simultaneously, ZnO layer selected band alignment, mild reaction at ZnO/Se

10.1007/s12200-022-00040-5 article EN cc-by Frontiers of Optoelectronics 2022-09-08

CuPbSbS3 (bournonite) has emerged as a promising light-absorbing material for thin-film solar cells due to its attractive photophysical properties. The crystallinity of films is main challenge achieving high power conversion efficiency. Herein, we perform series optimization strategies enhance the films, including adjusting annealing temperature and reducing carbon residue. optimized film acquires an enhanced crystallinity, optimal cell device based on it achieves efficiency 2.65% with good...

10.1021/acsami.1c00689 article EN ACS Applied Materials & Interfaces 2021-03-15

With the recent advancement in AI technology, IDSs reinforced by have been adopted to ensure system and network security. Unfortunately, computational storage overheads of such systems prevent them from being deployed IESs. To overcome challenges that restrict applicability intrusion detection for IESs, we propose a lightweight intelligent IDS. The proposed first generates behavioral specifications characterize normal communication an IES. Based on specifications, Gini index generalized...

10.1109/mnet.001.1900480 article EN IEEE Network 2020-02-19

Capacities of residential photovoltaics (PV) and battery storage are rapidly growing, while their lifecycle cost carbon implications not well understood. Here, we integrate PV generation load data for households in California to assess the current future emissions solar-plus-storage systems. Our results show that installing reduces $180-$730 110-570 kgCO2 per year household 2020. However, compared solar-only system, adding increases costs by 39%-67%, impact on is mixed (-20% 24%) depending...

10.1016/j.isci.2021.103492 article EN cc-by-nc-nd iScience 2021-11-22
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