Xiaokang Sun

ORCID: 0000-0003-0402-7342
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About
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Research Areas
  • Organic Electronics and Photovoltaics
  • Conducting polymers and applications
  • Perovskite Materials and Applications
  • Quantum Dots Synthesis And Properties
  • Thin-Film Transistor Technologies
  • Advanced Fiber Optic Sensors
  • Rock Mechanics and Modeling
  • Photonic and Optical Devices
  • Geomechanics and Mining Engineering
  • Metal-Organic Frameworks: Synthesis and Applications
  • Molecular Junctions and Nanostructures
  • Chalcogenide Semiconductor Thin Films
  • Nanowire Synthesis and Applications
  • Covalent Organic Framework Applications
  • Advanced Photocatalysis Techniques
  • Electronic and Structural Properties of Oxides
  • TiO2 Photocatalysis and Solar Cells
  • Drilling and Well Engineering
  • Magneto-Optical Properties and Applications
  • Photonic Crystal and Fiber Optics
  • Block Copolymer Self-Assembly
  • Semiconductor materials and interfaces
  • Polymer Surface Interaction Studies
  • Human Mobility and Location-Based Analysis
  • Advanced Polymer Synthesis and Characterization

Shenzhen Polytechnic
2023-2025

Ningbo Institute of Industrial Technology
2025

Xiangtan University
2022-2024

Great Bay University
2024

Chinese Academy of Sciences
2022-2023

Shanghai Advanced Research Institute
2022-2023

Shanghai Institute of Applied Physics
2022-2023

China University of Mining and Technology
2015-2019

Chongqing University
2012-2014

Tianjin University
2013

Abstract In this study, a novel wide‐bandgap small molecule guest material, ITOA, designed and synthesized for fabricating efficient ternary organic solar cells (OSCs) ITOA complements the absorbance of PM6:Y6 binary system, exhibiting strong crystallinity modest miscibility. optimizes morphology by promoting intensive molecular packing, reducing domain size, establishing preferred vertical phase distribution. These features contribute to improved well‐balanced charge transport, suppressed...

10.1002/advs.202401313 article EN cc-by Advanced Science 2024-04-03

A mesoporous layer was constructed by a donor-based nanoparticulate water-ink, which facilitates the infiltration of acceptor, allowing fabrication efficient organic solar cells with high thickness tolerance.

10.1039/d4ee00068d article EN Energy & Environmental Science 2024-01-01

Abstract Organic solar cells (OSCs) have emerged as a promising solution for sustainable energy production, offering advantages such low carbon footprint, short payback period, and compatibility with eco‐solvents. However, the use of hazardous solvents continues to dominate best‐performing OSCs, mainly because challenges controlling phase separation domain crystallinity in In this study, we combined solvent vapor treatment CS 2 thermal annealing precisely control PM6:M‐Cl PM6:O‐Cl systems...

10.1002/inf2.12530 article EN cc-by InfoMat 2024-01-31

Achieving high efficiency in both single-junction organic solar cells (OSCs) and tandem (TSCs) significantly relies on hole transport layers constructed from self-assembled molecules (SAM) with a well-ordered, face-on...

10.1039/d4ee05533k article EN Energy & Environmental Science 2025-01-01

Abstract Efficient organic solar cells (OSCs) equipped with thick‐film active layers and high flexibility are of great significance for industrial preparation practical applications. Herein, a ternary strategy coupled functional additive is employed to obtain efficient flexible OSCs. A novel polymer donor PBB1‐F good planarity synthesized as third component optimize photon capture molecular stacking. Meanwhile, dielectric constant polyarene ether (PAE) strong adhesion not only greatly...

10.1002/aenm.202201614 article EN Advanced Energy Materials 2022-07-03

The stretchability and stretch-induced structural evolution of organic solar cells (OSCs) are pivotal for their collapsible, portable, wearable applications, they mainly affected by the complex morphology active layers. Herein, a highly ductile conjugated polymer P(NDI2OD-T2) is incorporated into layers high-efficiency OSCs based on nonfullerene small molecule acceptors to simultaneously investigate morphological, mechanical, photovoltaic properties under stretching ternary blend films with...

10.1002/adma.202207884 article EN Advanced Materials 2022-11-05

Abstract Characterizing the bulk heterojunction (BHJ) morphology of active layer is essential for optimizing blade‐coated organic solar cells (OSCs). Here, evolution a highly efficient ternary polymer:nonfullerene blend PM6:N3:N2200 under different blade coating conditions probed in real‐time by situ synchrotron X‐ray scattering and ultraviolet‐visible (UV‐vis) spectroscopy. Besides, films at detailed ex microscopic imaging. The film exhibited optimized morphology, such as superior molecular...

10.1002/adfm.202213248 article EN Advanced Functional Materials 2023-01-17

Abstract The emerging non‐fullerene acceptors with low voltage losses have pushed the power conversion efficiency of organic solar cells (OSCs) to ≈20% auxiliary morphology optimization. Thermal annealing (TA), as most widely adopted post‐treatment method, has been playing an essential role in realizing potential various material systems. However, procedure TA, i.e., way that TA is performed, almost identical among thousands OSC papers since ≈30 years ago other than changes temperature and...

10.1002/adma.202411957 article EN Advanced Materials 2024-10-09

Improving the uniformity and density of self-assembled monolayers (SAMs) is crucial to elevate photovoltaic performance organic solar cells (OSCs). Herein, we introduced small molecules 1-hydroxybenzotriazole (HOBT) modulate distribution electrical properties (4-(7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic acid (4PADCB) on indium tin oxide (ITO) transparent electrodes in an innovative manner. The hydroxyl group HOBT interacts with phosphate SAMs, while steric repulsion exerted by backbone...

10.1021/acsenergylett.4c01564 article EN ACS Energy Letters 2024-08-01

Abstract The cathode interface layers (CILs) play a crucial role in enhancing the performance of organic solar cells (OSCs). However, challenges arise due to high work function CIL and inadequate contact with active layer, leading trap recombination poor charge extraction. In this study, novel approach is proposed improve injection extraction CILs by incorporating polyphenols, trihydroxybenzoic acid (TBA). Focusing on PDINN, its successfully reduced from 4.14 eV 3.80 obtained collection...

10.1002/aenm.202401741 article EN Advanced Energy Materials 2024-06-22

Sequential processing (SqP) of the active layer offers independent optimization donor and acceptor with more targeted solvent design, which is considered most promising strategy for achieving efficient organic solar cells (OSCs). In SqP method, favorable interpenetrating network seriously depends on fine control bottom swelling. However, choice solvent(s) both have been mostly based a trial-and-error manner. A single often cannot achieve sufficient yet not excessive swelling, has long...

10.1007/s40820-025-01715-2 article EN cc-by Nano-Micro Letters 2025-04-01

We report a magnetic-field sensor by merging the advantages of optical fiber Michelson interferometers with that magnetic fluid. Compact and low-cost were first fabricated high-frequency CO(2) laser, then they inserted into glass capillaries water-based Fe(3)O(4) fluid as sensing elements. The characteristics have been investigated experimental results show reflective spectrum fiber-magnetic linearly shifted change strength is perpendicular to axial devices. interference arm's diameter 50 μm...

10.1364/ao.52.000734 article EN Applied Optics 2013-01-30

A magnetic sensor utilizing long-period fiber grating (LPFG) written by high frequency CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> laser pulses in a D-shaped and the magneto-optical effect of fluid is proposed. Because evanescent field structure fiber, immersing LPFG with period 685 μm into water-based within capillary tube, redshift as 33.5 nm resonant wavelength observed when external magnetic-field intensity 189.7 mT, resulting...

10.1109/jphot.2012.2226439 article EN IEEE photonics journal 2012-10-24

Abstract Achieving high‐performance in all‐small‐molecule organic solar cells (ASM‐OSCs) significantly relies on precise nanoscale phase separation through domain size manipulation the active layer. Nonetheless, for ASM‐OSC systems, forging a clear connection between tuning of and intricacies proves to be formidable challenge. This study investigates intricate interplay adjustment creation optimal morphology, crucial ASM‐OSCs’ performance. It is demonstrated that exceptional layer achieved...

10.1002/aenm.202302731 article EN Advanced Energy Materials 2023-11-21

There is a significant challenge of charge recombination at the perovskite/electron transport layer (ETL), coupled with need optimized interface transfer in inverted perovskite solar cells (PSCs). In this work, an organometallic ferrocene-based molecule, ferrocenyl-bis-thieno[3,2-b]thiophene-2-carboxylate (FcTTPc), inherent carboxylate and thiophene functionalities surrounding central ferrocene motif, meticulously designed synthesized for modification perovskite/ETL interface. The groups...

10.1021/acsenergylett.4c01433 article EN ACS Energy Letters 2024-08-07

Abstract The strategic and logical development of the third component (guest materials) plays a pivotal intricate role in improving efficiency stability ternary organic solar cells (OSCs). In this study, novel guest material with wide bandgap, named IDTR, is designed, synthesized, incorporated as component. IDTR exhibits complementary absorption characteristics cascade band alignment PM6:Y6 binary system. Morphological analysis reveals that introduction results strong crystallinity, good...

10.1002/smll.202400826 article EN Small 2024-04-18

Abstract A bromine‐substituted [2‐(9H‐Carbazol‐9‐yl) ethyl] phosphonic acid, 1Br‐2PACz, is designed as hole‐selective self‐assembled monolayers (SAMs), contributing to an outstanding power conversion efficiency (PCE) of 19.35% for binary bulk‐heterojunction (BHJ) based organic solar cells (OSCs). As compared the previous high‐performance 2Br‐2PACz SAMs, 1Br‐2PACz molecules can effectively reduce interaction SAM with BTP‐eC9 nonfullerene acceptors a decreased binding energy, resulting in...

10.1002/adfm.202406060 article EN Advanced Functional Materials 2024-08-29

Compared to polymer‐based organic solar cells, all‐small‐molecule cells (ASM‐OSCs) have garnered significant attention due their well‐defined chemical structures, lower batch‐to‐batch variation, straightforward synthesis and purification procedures, easy modulate properties. Recent developments in small molecule donors enabled ASM‐OSCs achieve power conversion efficiencies excess of 17%, gradually approaching those devices, demonstrating considerable potential for commercialization. However,...

10.1002/solr.202300332 article EN Solar RRL 2023-06-24

Two novel guest molecules were designed and incorporated into the PM6:L8-BO system, which could enhance crystallinity optimize vertical phase distribution. Ternary OSCs achieved a remarkable PCE of 19.04% with enhanced stability.

10.1039/d4ta02282c article EN Journal of Materials Chemistry A 2024-01-01
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