Fabrication of ultra high density ferromagnetic column arrays by porous alumina template for magnetic recording media

Shimizu, Tomohiro; Morimoto, Koji; Nagayanagi, M.; Fujii, Yutaka; Yaegashi, Osamu; Wu, G.R.; Sakaue, Hiroyuki; Takahagi, Takayuki; Shingubara, Shoso

doi:10.1109/imnc.2003.1268519

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…We have reported the promotion of three-dimensional long-period arrangement of QDs by depositing QDs onto a Si nanohole template with the aim of applying such QDs to solar cells. 24,25) In this work, we investigated a method for realizing a perfect QD superlattice in which the QDs have the same plane orientation. It has been reported that the physical and chemical interactions between assembled QDs are strengthened by fabricating QDs with clear facets.…”

Section: Introductionmentioning

confidence: 99%

Formation of superlattice with aligned plane orientation of colloidal PbS quantum dots

Mukai¹,

Fujimoto²,

Suetsugu³

2018

Jpn. J. Appl. Phys.

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We investigated a method of forming a perfect quantum dot (QD) superlattice, in which each QD has the same plane orientation, by depositing colloidal PbS QDs with clear facets in solution. QD facets were controlled by adjusting the synthesis temperature. X-ray evaluation showed that the crystal orientations of the film with QDs having clear facets were aligned. The slow deposition promoted this crystal alignment. The red shift of photoluminescence wavelength caused by the film formation was larger with QDs having facets than with spherical QDs, suggesting that the connection of the wave function between QDs was better so that the quantum size effect was further reduced.

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Section: Introductionmentioning

confidence: 99%

Formation of superlattice with aligned plane orientation of colloidal PbS quantum dots

Mukai¹,

Fujimoto²,

Suetsugu³

2018

Jpn. J. Appl. Phys.

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“…We have also shown that a large-area QD superlattice film, where QDs are arranged with a long periodicity, can be produced by depositing QDs on a Si template on which pyramidal microholes were arranged along the substrate crystal orientation. [23][24][25] In this letter, we present a method to solve the crystal-orientation problem peculiar to the colloidal-QD superlattice. We reveal that a large-area QD superlattice film with coinciding crystal orientations in three dimensions can be fabricated by depositing faceted QDs on a pyramidal microhole array.…”

mentioning

confidence: 99%

Superlattice formation of faceted PbS quantum dots with three-dimensionally aligned crystal orientation

Mukai

Fujimoto

Suetsugu

2018

Appl. Phys. Express

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We report the successful fabrication of a superlattice film composed of PbS colloidal quantum dots (QDs) with a three-dimensionally coincident crystal orientation. Faceted QDs with a truncated octahedral shape were prepared and deposited in a solvent on a pyramidal microhole array prepared on a Si (100) substrate. During the deposition, facets of neighboring QDs came into contact with each other in the aligned microholes.The three-dimensional crystal orientation alignment was confirmed by X-ray pole figure mapping. Such QD superlattice film with aligned crystal orientation can contribute to the realization of high-energy conversion efficiency of semiconductor solar cells.

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Fabrication of ultra high density ferromagnetic column arrays by porous alumina template for magnetic recording media

Cited by 2 publications

References 4 publications

Formation of superlattice with aligned plane orientation of colloidal PbS quantum dots

Formation of superlattice with aligned plane orientation of colloidal PbS quantum dots

Superlattice formation of faceted PbS quantum dots with three-dimensionally aligned crystal orientation

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