Jiakang Zhang

ORCID: 0009-0007-0614-7555
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About
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Research Areas
  • Perovskite Materials and Applications
  • Conducting polymers and applications
  • Organic Light-Emitting Diodes Research
  • Electrocatalysts for Energy Conversion
  • Advanced battery technologies research
  • Organic Electronics and Photovoltaics
  • Quantum Dots Synthesis And Properties
  • ZnO doping and properties
  • Organic and Molecular Conductors Research
  • Flood Risk Assessment and Management
  • Nanomaterials for catalytic reactions
  • Chemical Synthesis and Analysis
  • Graphene research and applications
  • Power Systems and Renewable Energy
  • Asphalt Pavement Performance Evaluation
  • HVDC Systems and Fault Protection
  • Advanced Malware Detection Techniques
  • Fuel Cells and Related Materials
  • Geotechnical Engineering and Underground Structures
  • Carbon dioxide utilization in catalysis
  • Advanced Memory and Neural Computing
  • Infrastructure Maintenance and Monitoring
  • Ferroelectric and Negative Capacitance Devices
  • Microgrid Control and Optimization
  • Asymmetric Hydrogenation and Catalysis

Qingdao University of Science and Technology
2020-2025

Shenzhen Institutes of Advanced Technology
2025

Hebei University of Technology
2024

Sun Yat-sen University
2024

Sinopec (China)
2023

Southwest Jiaotong University
2023

Southeast University
2022

State Council of the People's Republic of China
2020

Qingdao Center of Resource Chemistry and New Materials
2020

Peking University
2015

High-performance perovskite solar cells have demonstrated commercial viability, but still face the risk of contamination from lead leakage and long-term stability problems caused by defects. Here, an organic small molecule (octafluoro-1,6-hexanediol diacrylate) is introduced into film to form a polymer through in situ thermal crosslinking, which carbonyl group anchors uncoordinated Pb2+ reduces lead, along with -CF2 - hydrophobic protecting water invasion. Additionally, passivates varieties...

10.1002/anie.202305221 article EN Angewandte Chemie International Edition 2023-06-08

Abstract The rapid relaxation of hot carriers leads to energy loss in the form heat and consequently restricts theoretical efficiency single‐junction solar cells; However, this issue has not received much attention tin‐lead perovskites cells. Herein, tin(II) oxalate (SnC 2 O 4 ) is introduced into perovskite precursor solution regulate hot‐carrier cooling dynamics. addition SnC increases length carrier diffusion, extends lifetime carriers, simultaneously slows down rate carriers....

10.1002/adma.202312170 article EN Advanced Materials 2024-01-21

The migration of ions is known to be associated with various detrimental phenomena, including current density-voltage hysteresis, phase segregation, etc., which significantly limit the stability and performance perovskite solar cells, impeding their progress toward commercial applications. To address these challenges, we propose incorporating a polymerizable organic small molecule monomer, N-carbamoyl-2-propan-2-ylpent-4-enamide (Apronal), into film form crosslinked polymer (P-Apronal)...

10.1002/anie.202314106 article EN Angewandte Chemie International Edition 2023-10-25

Abstract The migration of ions is known to be associated with various detrimental phenomena, including current density‐voltage hysteresis, phase segregation, etc., which significantly limit the stability and performance perovskite solar cells, impeding their progress toward commercial applications. To address these challenges, we propose incorporating a polymerizable organic small molecule monomer, N‐carbamoyl‐2‐propan‐2‐ylpent‐4‐enamide (Apronal), into film form crosslinked polymer...

10.1002/ange.202314106 article EN Angewandte Chemie 2023-10-25

Designing dopant‐free small‐molecule hole transport materials (HTMs) with self‐assembly behavior via noncovalent interactions is considered as one effective strategy to achieve high‐performance inverted perovskite solar cells (PSCs). Herein, two donor‐ π bridge‐donor (D– –D) HTMs are presented, TPASF and TPAOF, containing 3,6‐dimethoxythieno[3,2‐b]thiophene a core part 3‐fluoro‐ N,N ‐bis(4‐(methylthio)phenyl)aniline ‐bis(4‐methoxyphenyl)aniline side group. The synergistic F⋅⋅⋅S dipole–dipole...

10.1002/solr.202300031 article EN cc-by Solar RRL 2023-02-24

Various intermolecular interactions in perovskite solar cells can help improving efficiency and stability.

10.1039/d0mh00745e article EN Materials Horizons 2020-01-01

Abstract High‐performance perovskite solar cells have demonstrated commercial viability, but still face the risk of contamination from lead leakage and long‐term stability problems caused by defects. Here, an organic small molecule (octafluoro‐1,6‐hexanediol diacrylate) is introduced into film to form a polymer through in situ thermal crosslinking, which carbonyl group anchors uncoordinated Pb 2+ reduces lead, along with −CF 2 − hydrophobic protecting water invasion. Additionally, passivates...

10.1002/ange.202305221 article EN Angewandte Chemie 2023-06-08

Abstract The chemical regulation of SnO 2 to enhance the properties buried interface in perovskite films is extensively investigated, but underpinning mechanisms remain insufficiently understood. In this study, a synergistic strategy for cation fixation and anion diffusion by incorporating (3‐amino‐3‐carboxypropyl) dimethylsulfonium chloride (Vitamin U, V U ) into colloidal solution proposed. cationic end (─COOH, ─NH effectively inhibits aggregation particles promotes electron extraction...

10.1002/smll.202500240 article EN Small 2025-03-10

Solution-processed perovskite films frequently exhibit a high density of defects at their surfaces and grain boundaries, leading to significant nonradiative recombination, hysteresis, energy losses. Interfacial modification is crucial strategy for enhancing the photovoltaic performance solar cells. In this study, we introduce polar molecule 3,3,3-trifluoropropionamide (TFAN) with permanent dipole moment modify surface films, effectively passivating uncoordinated Pb2+. The results demonstrate...

10.1021/acs.langmuir.5c00366 article EN Langmuir 2025-03-20

With the acceleration of global climate change and frequent intensification human activities, frequency intensity flood disasters are rising, prevention situation is becoming more critical. Therefore, in-depth investigation causes floods their wide-ranging impacts has become an important issue that needs to be urgently addressed in fields environmental science disaster management. Given high cost comprehensive data collection processing all potential prediction indicators, accurate selection...

10.54097/5znahe29 article EN cc-by-nc Highlights in Science Engineering and Technology 2025-03-31

Encrypted traffic classification can essentially support network QoS (Quality of Service) and user QoE Experience). However, as a typical supervised learning problem, it requires sufficiently labeled samples, which should be frequently updated. The current gateway-based sample acquisition methods only carried out under TLS traffic. It relies on the Server Name Indication, confused optional field that tampered with. end-based manually or automatically have low efficiency lack integrity,...

10.3390/app122211731 article EN cc-by Applied Sciences 2022-11-18

Abstract Interfacial properties of a hole‐transport material (HTM) and perovskite layer are high importance, which can influence the interfacial charge transfer dynamics as well growth bulk crystals particularly in inverted structure. The halogen bonding (XB) has been recognized powerful functional group to be integrated with new small molecule HTMs. Herein, carbazole‐based halo (iodine)‐functional HTM (O1), is synthesized for first time, demonstrating hole mobility suitable energy levels...

10.1002/advs.202411567 article EN cc-by Advanced Science 2024-10-22
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