Photocurrent Generation in Heterostructured Ultrathin Films Fabricated by Layer-by-Layer Deposition of Polyelectrolytes Bearing Tris(2,2‘-bipyridine)ruthenium(II) and Ferrocene Moieties

Langmuir ◽  
2005 ◽  
Vol 21 (4) ◽  
pp. 1584-1589 ◽  
Author(s):  
Toshiki Fushimi ◽  
Akimichi Oda ◽  
Hideo Ohkita ◽  
Shinzaburo Ito
2017 ◽  
Vol 4 (11) ◽  
pp. 1900-1908 ◽  
Author(s):  
Hafiz Muhammad Asif ◽  
Ningning Qu ◽  
Yunshan Zhou ◽  
Lijuan Zhang ◽  
Farooq Khurrum Shehzad ◽  
...  

Third-order optical nonlinearities of ultrathin films derived from cationic phthalocyanine and Keggin polyoxometalates can be well tuned and enhanced.


Coatings ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1491
Author(s):  
Nana Zhang ◽  
Di Wang ◽  
Jie Wang ◽  
Hong Fang ◽  
Bin He ◽  
...  

The stacked single-unit cell Ba1-xSrxTiO3 (BSTO) thin film designed by the high-throughput method is fabricated by layer-by-layer deposition by laser molecular beam epitaxy, and its ferroelectric and dielectric characteristics as a function of Sr concentration are comprehensively investigated. The permittivity of BSTO exhibits a monotonous increase by Sr with a plateau in the region of 14% < Sr < 85%. Meanwhile, at the low Sr doping regime, the piezoelectric response has been discovered, and the maximum piezoresponse and d33 can reach approximately 139.05 pm and 88 pm/V once an appropriate Ba/Sr ratio is formed, exhibiting a coexistence of a dielectric property and giant piezoresponse. This effective piezoelectric constant d33 value is significantly larger than the conventional chemical doping scenarios, suggesting that the intra-plane interaction is crucial for designing future promising dielectric and ferroelectric thin films via high-throughput technologies.


2015 ◽  
Vol 7 (13) ◽  
pp. 7049-7053 ◽  
Author(s):  
Benjamin Vonhoeren ◽  
Simon Dalgleish ◽  
Laigui Hu ◽  
Michio M. Matsushita ◽  
Kunio Awaga ◽  
...  

Polymer ◽  
2004 ◽  
Vol 45 (25) ◽  
pp. 8561-8565 ◽  
Author(s):  
Daiki Wakizaka ◽  
Toshiki Fushimi ◽  
Hideo Ohkita ◽  
Shinzaburo Ito

Author(s):  
Yoshichika Bando ◽  
Takahito Terashima ◽  
Kenji Iijima ◽  
Kazunuki Yamamoto ◽  
Kazuto Hirata ◽  
...  

The high quality thin films of high-Tc superconducting oxide are necessary for elucidating the superconducting mechanism and for device application. The recent trend in the preparation of high-Tc films has been toward “in-situ” growth of the superconducting phase at relatively low temperatures. The purpose of “in-situ” growth is to attain surface smoothness suitable for fabricating film devices but also to obtain high quality film. We present the investigation on the initial growth manner of YBCO by in-situ reflective high energy electron diffraction (RHEED) technique and on the structural and superconducting properties of the resulting ultrathin films below 100Å. The epitaxial films have been grown on (100) plane of MgO and SrTiO, heated below 650°C by activated reactive evaporation. The in-situ RHEED observation and the intensity measurement was carried out during deposition of YBCO on the substrate at 650°C. The deposition rate was 0.8Å/s. Fig. 1 shows the RHEED patterns at every stage of deposition of YBCO on MgO(100). All the patterns exhibit the sharp streaks, indicating that the film surface is atomically smooth and the growth manner is layer-by-layer.


2021 ◽  
Author(s):  
Kristina Ashurbekova ◽  
Karina Ashurbekova ◽  
Iva Saric ◽  
Evgeny Modin ◽  
Mladen Petravic ◽  
...  

We developed a thin film growth with a radical-initiated cross-linking of vinyl groups in a layer-by-layer manner via molecular layer deposition (MLD). The cross-linked film exhibited improved properties like 12% higher density and enhanced stability compared to the non-cross-linked film.


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