Fengxian Cao

ORCID: 0000-0003-0315-1616
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About
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Research Areas
  • Perovskite Materials and Applications
  • Conducting polymers and applications
  • Chalcogenide Semiconductor Thin Films
  • Quantum Dots Synthesis And Properties
  • Organic Light-Emitting Diodes Research
  • Silicon and Solar Cell Technologies
  • Organic Electronics and Photovoltaics
  • Semiconductor materials and interfaces
  • Solid-state spectroscopy and crystallography
  • Advanced battery technologies research
  • Integrated Circuits and Semiconductor Failure Analysis
  • Thin-Film Transistor Technologies
  • Nanowire Synthesis and Applications
  • Semiconductor materials and devices
  • Polyoxometalates: Synthesis and Applications
  • Advanced Nanomaterials in Catalysis
  • Metal-Organic Frameworks: Synthesis and Applications
  • Gas Sensing Nanomaterials and Sensors

Soochow University
2024-2025

Huaqiao University
2021-2024

Institute of Physical Materials Science
2021

Henan Polytechnic University
2020

Efficient and stable organic-silicon heterojunction solar cells are highly desirable. In this work, solution-processed poly(3,4-ethylenedioxythiophene): perfluorinated sulfonic acid (PEDOT:F) is investigated as hole-selective contact for crystalline silicon (c-Si) cells....

10.1039/d4ta08449g article EN Journal of Materials Chemistry A 2025-01-01

Passivating defects at the wide‐bandgap perovskite/C60 interface without impeding interfacial charge transport can effectively enhance efficiency of perovskite/silicon tandem solar cells (TSCs). Herein, we study impact benzene‐derivative ligands with elaborately modulated binding strength and acidity on perovskites for high‐performance TSCs. Specifically, acidity/alkalinity are preliminary tuned using different functional groups ‐PO₃H₂, ‐COOH, ‐NH₂, further finely adjusted by altering chain...

10.1002/anie.202500350 article EN Angewandte Chemie International Edition 2025-03-11

Perovskite solar cells (PSCs) with n-i-p structures often utilize an organic 2,2',7,7'-tetrakis (N, N-di-p-methoxyphenyl-amine) 9,9'-spirobifluorene (spiro-OMeTAD) along additives of lithium bis(trifluoromethanesulfonyl)imide salt (LiTFSI) and tert-butylpyridine as the hole transporting layer (HTL). However, HTL lacks stability in ambient air, numerous defects are present on perovskite surface, which is not conducive to a stable efficient PSC. Therefore, constructive strategies that...

10.1002/smll.202207784 article EN Small 2023-03-28

Abstract The presence of a high density defects at the perovskite/electron transport layer (ETL) interface results in significant nonradiative recombination losses, thus impeding efficiency enhancement perovskite/silicon tandem solar cells (TSCs). In this investigation, metallocene‐based molecule, cobalt (III) dichlorophene hexafluorophosphate (CcPF 6 ), is employed for perovskite surface passivation. To maximize its efficacy, molecule dissolved mixed solvent acetonitrile and chlorobenzene,...

10.1002/aenm.202401039 article EN Advanced Energy Materials 2024-05-22

Passivating defects at the wide‐bandgap perovskite/C60 interface without impeding interfacial charge transport can effectively enhance efficiency of perovskite/silicon tandem solar cells (TSCs). Herein, we study impact benzene‐derivative ligands with elaborately modulated binding strength and acidity on perovskites for high‐performance TSCs. Specifically, acidity/alkalinity are preliminary tuned using different functional groups ‐PO₃H₂, ‐COOH, ‐NH₂, further finely adjusted by altering chain...

10.1002/ange.202500350 article EN Angewandte Chemie 2025-03-11

Wide bandgap metal compound-based carrier-selective contacts have been intensively investigated for crystalline silicon (c-Si) solar cells. In this work, we develop the electron-selective contact tantalum oxynitride (TaOxNy) deposited via magnetron sputtering. The effect of deposition parameters (N2 concentration, power, and pressure) on optoelectronic properties TaOxNy is investigated. optimized film features a low work function 4.3 eV, wide 2.8 sheet resistance. surface passivation...

10.1063/5.0269841 article EN Applied Physics Letters 2025-03-01

Perovskite solar cells with K<sub>3</sub>[Fe(CN)<sub>6</sub>]-doped spiro-OMeTAD HTL exhibit a champion power conversion efficiency of 20.83%.

10.1039/d1tc01284c article EN Journal of Materials Chemistry C 2021-01-01

Benefiting from an in situ formed 2D perovskite capping layer, a solar cell with 3D/2D heterojunction structure exhibits maximum power conversion efficiency of 22.06% and excellent moisture stability.

10.1039/d1nr03624f article EN Nanoscale 2021-01-01

Benefiting from the presence of butylamine bis(trifluoromethyl)sulfonylimine (BATFSI), devices with BATFSI achieved superior power conversion efficiency exceeding 24% and demonstrated outstanding stability.

10.1039/d4qi01459f article EN Inorganic Chemistry Frontiers 2024-01-01

Abstract Crystalline silicon ( c ‐Si) solar cells require passivating contacts to unlock their full efficiency potential. For this doped layers are the materials of choice, as they yield device voltages close thermodynamic limit. Yet, replacing such with wide‐bandgap metal oxides may be advantageous from a cost perspective and minimize parasitic optical absorption. Here aluminum‐doped zinc oxide (AZO)‐based high electron selectivity presented. The SiO 2 /AZO/Al O 3 stack is demonstrated...

10.1002/adfm.202415039 article EN Advanced Functional Materials 2024-10-07

Benefiting from the successful introduction of 6-amino-1-hexanol (HAL), HAL-modified perovskite solar cell achieves an optimal efficiency 23.58%.

10.1039/d3qi01531a article EN Inorganic Chemistry Frontiers 2023-01-01
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