Lattice Boundary Enhancement on Thermoelectric Behaviors of Heavily Boron‐Doped Silicon for Energy Harvesting: Electrical versus Thermal Conductivity DOI Creative Commons

Shang Yu Tsai,

Po‐Hsien Tseng,

Chun Chi Chen

et al.

Advanced Materials Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 3, 2024

Abstract Green energy collection is crucial for achieving future net‐zero carbon emissions, with harvesting being a key solution. Silicon, widely used p‐type semiconductor doped boron ions, prevalent in modern electronics. However, the impact of lattice boundaries from ion implantation doping on thermoelectric properties remains underexplored. A heavily boron‐doped silicon layer to enhance performance. The layers, formed silicon, exhibit epitaxial crystal structures under all conditions using an system. Transmission electron microscopy and atom probe tomography reveal that interstitial create lattice. These effectively reduce thermal conductivity compared intrinsic silicon. At 372.76 K, best power factor 3.05 mW/m·K 2 , obtained at implant dose 10 16 cm −2 . This study demonstrates raised electrical induced by substituting atoms, reduced caused interstitial‐formed findings highlight potential improving materials advancing energy‐efficient technologies.

Language: Английский

Bi‐Directional Assembly of Boron Nitride µ‐Platelets by Micro‐Molding for Advanced Thermal Interface Materials DOI Creative Commons

Young Gil Kim,

Inhwa Jung,

Yujin Mun

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Abstract With dramatically growing demand for highly complicated, high power‐consumed 3D stacked integrated circuit electronics, the advancement of effective thermal management has become a key technology to secure both performance and stability. To ensure better heat microelectronics, especially pursuing unconventional devices assembled on sheet paper or plastics, more feasible is inevitable. In this study, mechanically robust bi‐directionally conductive material are presented by micro‐molding with boron‐nitride (BN) microscale platelets (µ‐platelets) dispersed in polymeric matrix. Micro‐pattern‐induced bifurcation assembly orientation BN µ‐platelets bi‐directionality conduction characteristics observed. The bifurcated orientations optimized geometry micro‐pattern unit size assistance particle‐fluid simulation. Indeed, exceptionally enhanced conductivities through directions: 6.9 W m −1 K through‐plane 7.4 in‐plane, respectively achieved. It also exhibits flexibility minimum radius curvature ≈1 mm capability conformal contact diverse morphologies stably flow even deformed device structures. developed TIM can be applied high‐power, high‐temperature, deformable application environments 3D‐integrated electronics.

Language: Английский

Citations

0
A Novel PDMS-Based Flexible Thermoelectric Generator Fabricated by Ag2Se and PEDOT:PSS/Multi-Walled Carbon Nanotubes with High Output Performance Optimized by Embedded Eutectic Gallium–Indium Electrodes DOI Creative Commons
Rui Guo,

Weipeng Shi,

Rui Guo

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(6), P. 542 - 542

Published: March 20, 2024

Flexible thermoelectric generators (FTEGs), which can overcome the energy supply limitations of wearable devices, have received considerable attention. However, use toxic Te-based materials and fracture-prone electrodes constrains application FTEGs. In this study, a novel Ag2Se Poly (3,4-ethylene dioxythiophene): poly (styrene sulfonate) (PEDOT:PSS)/multi-walled carbon nanotube (MWCNT) FTEG with high output performance good flexibility is developed. The columns formulated in work are environmentally friendly reliable. key enabler embedded EGaIn electrodes, increase temperature difference collected by column, thereby improving performance. Additionally, could be directly printed on polydimethylsiloxane (PDMS) molds without wax paper, simplifies preparation process FTEGs enhances fabrication efficiency. exhibits highest power density 25.83 μW/cm2 10.95 μW at ΔT = 15 K. latter 31.6% higher than that silver-based 2.5% covered EGaIn-based Moreover, prepared has an excellent (>1500 bends) stability (>30 days). At humidity temperature, maintains These results demonstrate used as stable for devices.

Language: Английский

Citations

3
A Stretchable Thermoelectric Device based on Direct Ink Writing of Liquid Metal and Multi‐Layer Lamination DOI
Hayeon Kim, Joonbum Bae

Advanced Materials Technologies, Journal Year: 2024, Volume and Issue: 9(14)

Published: April 9, 2024

Abstract Wearable thermoelectric devices are widely used due to their ability generate heat and cool rapidly without the need for bulky external equipment. Researchers have explored methods enhance flexibility stretchability by incorporating liquid metal as an electrode. However, challenge lies in low thermal conductivity of polymer, which hampers heating cooling performance. Traditional methods, like molding spraying, increase thickness both polymer channels, but this added does not significantly improve device's stretchability.[1, 2] To overcome these issues, paper proposes a stretchable device (STED), offers improved capabilities, well enhanced stretchability. Ag powder with varying particle sizes is mixed material. Additionally, deposited using direct ink writing (DIW) method, reducing whole STED. The air layer created printing molten isomalt, subsequently removed water. proposed STED exhibits high stretchability, reaching up 150 %, enabling flexible twisting various directions. double‐layer structure resulted maximum temperature decrease 14 °C at room temperature.

Language: Английский

Citations

3
Progress and perspectives of self-powered gas sensors DOI Creative Commons
Lei Wang, Xinqi Yao, Yin Zhang

et al.

Next Materials, Journal Year: 2023, Volume and Issue: 2, P. 100092 - 100092

Published: Dec. 30, 2023

Ambient gas monitoring has been studied for over a century, and the field of self-powered sensors is advancing rapidly. Currently, main solution conversion ambient energy into electrical its use to power sensors. Various harvesters are available, such as frictional electric nanogenerators, piezoelectric thermoelectric generators, photovoltaic cells, capture different forms energy. Simultaneously, can be designed atmospheric sensing requirements. Self-powered have shown great promise in applications human health monitoring, detection hazardous leaks, prevention drunk driving, preservation food pharmaceuticals, agricultural production, condition industrial equipment. However, commercial applications, significant progress still needs made on In this review, an objective overview four typical harvesting devices provided, covering types, structures, materials, sources. systematically categorized, with latest research presented. Future trends then envisioned potential commercialisation discussed.

Language: Английский

Citations

7
Lattice Boundary Enhancement on Thermoelectric Behaviors of Heavily Boron‐Doped Silicon for Energy Harvesting: Electrical versus Thermal Conductivity DOI Creative Commons

Shang Yu Tsai,

Po‐Hsien Tseng,

Chun Chi Chen

et al.

Advanced Materials Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 3, 2024

Abstract Green energy collection is crucial for achieving future net‐zero carbon emissions, with harvesting being a key solution. Silicon, widely used p‐type semiconductor doped boron ions, prevalent in modern electronics. However, the impact of lattice boundaries from ion implantation doping on thermoelectric properties remains underexplored. A heavily boron‐doped silicon layer to enhance performance. The layers, formed silicon, exhibit epitaxial crystal structures under all conditions using an system. Transmission electron microscopy and atom probe tomography reveal that interstitial create lattice. These effectively reduce thermal conductivity compared intrinsic silicon. At 372.76 K, best power factor 3.05 mW/m·K 2 , obtained at implant dose 10 16 cm −2 . This study demonstrates raised electrical induced by substituting atoms, reduced caused interstitial‐formed findings highlight potential improving materials advancing energy‐efficient technologies.

Language: Английский

Citations

2