hetero structure
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Nano Today ◽  
2022 ◽  
Vol 42 ◽  
pp. 101373
Author(s):  
Xiangyu Zeng ◽  
Ge Ye ◽  
Shuyi Huang ◽  
Qikai Ye ◽  
Wei Li ◽  
...  

2022 ◽  
Author(s):  
Tong Wang ◽  
Min Zha ◽  
Yi-peng Gao ◽  
Si-Qing Wang ◽  
Hai-Long Jia ◽  
...  

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Bushra Jabar ◽  
Fu Li ◽  
Zhuanghao Zheng ◽  
Adil Mansoor ◽  
Yongbin Zhu ◽  
...  

AbstractNanocomposite engineering decouples the transport of phonons and electrons. This usually involves the in-situ formation or ex-situ addition of nanoparticles to a material matrix with hetero-composition and hetero-structure (heC-heS) interfaces or hetero-composition and homo-structure (heC-hoS) interfaces. Herein, a quasi homo-composition and hetero-structure (hoC-heS) nanocomposite consisting of Pnma Bi2SeS2 - Pnnm Bi2SeS2 is obtained through a Br dopant-induced phase transition, providing a coherent interface between the Pnma matrix and Pnnm second phase due to the slight structural difference between the two phases. This hoC-heS nanocomposite demonstrates a significant reduction in lattice thermal conductivity (~0.40 W m−1 K−1) and an enhanced power factor (7.39 μW cm−1 K−2). Consequently, a record high figure-of-merit ZTmax = 1.12 (at 773 K) and a high average figure-of-merit ZTave = 0.72 (in the range of 323–773 K) are achieved. This work provides a general strategy for synergistically tuning electrical and thermal transport properties by designing hoC-heS nanocomposites through a dopant-induced phase transition.


2021 ◽  
Author(s):  
Xu Han ◽  
Koki Tsushima ◽  
Takuto Shirai ◽  
Motonari Sato ◽  
Shingo Ito ◽  
...  

2021 ◽  
pp. 132836
Author(s):  
Jiaxin Zhang ◽  
Ying Deng ◽  
Yaqi Wu ◽  
Zhenyu Xiao ◽  
Xiaobin Liu ◽  
...  

2021 ◽  
Vol 56 (33) ◽  
pp. 18592-18607
Author(s):  
Gnanavel Angamuthu ◽  
Debasish Mohanty ◽  
Venkatesan Rengarajan

Small ◽  
2021 ◽  
pp. 2103861
Author(s):  
Jeong Hun Kim ◽  
Il Yong Choi ◽  
Jin Hyun Kim ◽  
Jaerim Kim ◽  
Young Kyeong Kim ◽  
...  

2021 ◽  
Author(s):  
Durai Murugan Kandhasamy ◽  
Paulpandian Muthu Mareeswaran ◽  
Chellappan Selvaraju ◽  
Namasivayam Dhenadhayalan

Synthesis of MoS2/Graphene hetero-structure in single stage, liquid-phase exfoliation in 7:3 isopropyl alcohol /water mixture and its consequences on the photoluminescence behavior of MoS2 have been studied. Thus synthesized hetero-structure was characterized using UV-visible, micro-Raman spectroscopy, Transmission electron microscopy(TEM), and Dynamic Light Scattering (DLS) analysis. UV-Visible and micro-Raman analysis confirm improved exfoliation to the level of monolayer hetero-structure. The photophysical properties of the hetero-structure were analyzed using steady state and time resolved luminescence techniques. An enhanced photoluminescence observed in the case of hetero-structure probably due to increase in the defect sites or reduction in the rate of non-radiative decay upon formation of sandwiched hetero-structure. Applications of this hetero-structure for fluorescence live cell imaging carried out and the hetero-structure demonstrated a better luminescence contrast compared to its individual counterpart MoS2 in phosphate buffered saline (PBS).


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