Synthesis of oxide nanoparticles embedded in polyimide

Chung, Yoon Young; Park, Hwan Pil; Jeon, Hyung Jun; Yoon, Chong Seung; Lim, Sang-Kyu; Kim, Young Ho

doi:10.1116/1.1624269

Cited by 33 publications

(16 citation statements)

References 10 publications

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“…On the other hand, with thicknesses much thinner than 3.5 nm, we suspect that we may not have a complete coverage of the metal film over the amorphous PI precursor layer. Detailed procedure of preparation of the nanoparticles was described elsewhere [6,7]. The PI/Fe 100−x Pt x /PI samples were cured at different temperatures (400-700 • C) for 1 h under vacuum (10 −3 Pa).…”

Section: Methodsmentioning

confidence: 99%

“…It is also questionable that the self-assembled system would be sufficiently robust for commercial applications. We have previously demonstrated that oxide (γ -Fe 2 O 3 , Cu 2 O, ZnO) nanoparticles can be produced as a byproduct of the imidization reaction of polyimide (PI) [6,7]. These nanoparticles were physically isolated and retained in a monolayer embedded in an inert organic matrix in the as-prepared state without requiring further processing Following our previous results, we propose a new method of fabricating metallic nanoparticles based on the selective oxidation of an alloy film.…”

Section: Introductionmentioning

confidence: 90%

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Nanoparticles fabricated by selective reaction of Fe100−xPtx alloy films during imidization of polyamic acid

Lim

Yoon

Kim

et al. 2005

Journal of Colloid and Interface Science

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 90%

Nanoparticles fabricated by selective reaction of Fe100−xPtx alloy films during imidization of polyamic acid

Lim

Yoon

Kim

et al. 2005

Journal of Colloid and Interface Science

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“…In recent years, a new nano-floating gate memory device has been studied using metal oxide nanoparticles and polyimide layers as charge storage layer and gate insulator, respectively [5]. The polyimide has a potential matrix for the nano-particles because of its good thermal stability and chemical endurance for electric and optoelectronic applications [6]. It is reported that the Cu 2 O, ZnO, Fe 2 O 3 or Ni 1−x Fe x metal nano-particles embedded in polyimide layer were produced during the imidization of polyimide precursors [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Enhanced of electrical characteristics of nano-crystal floating gate memory with In2O3 nano-particles embedded in polyimide

et al. 2007

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We fabricated the nano-floating gate memory (NFGM) with In 2 O 3 nano-particles embedded in polyimide gate insulators. Self-assembled In 2 O 3 nano-particles were created by chemical reaction between the polymer precursor and the indium film. The particle size and density of In 2 O 3 nano-particles were about 7 nm and 6×10 11 cm −2 , respectively. The electrical characterization of the NFGM with In 2 O 3 nano-particles embedded in polyimide layer were measured and the memory window larger than 3.8 V was obtained from the fabricated NFGM devices due to the charging effects of In 2 O 3 particles. Subthreshold swing, output current characteristics and retention time of fabricated NFGM devices were considerably improved by the postannealing process in 3% hydrogen diluted H 2 /N 2 ambient.

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“…These attractive properties have inspired the development of both physical and chemical methods to fabricate Cu 2 O nanoparticles. Oxygen plasma‐assisted molecular beam epitaxy, 13 the activated reactive evaporation technique, 14,15 the evaporation method followed by annealing, 11,16–18 and magnetron sputtering 19 are known as physical methods for the fabrication of Cu 2 O nanoparticles. Some of these methods allow for the fabrication of Cu 2 O nanoparticles of <10 nm in size, 11,14,18,19 which is favorable for the investigation of the quantum confinement effect.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties and Fabrication of Cuprous Oxide Nanoparticles by Microemulsion Method

Suzuki

Tanaka

Andõ

et al. 2011

Journal of the American Ceramic Society

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Well-crystallized cuprous oxide (Cu 2 O) nanoparticles were successfully fabricated using a microemulsion (ME) method. A solution containing copper (I) element for hydrolysis reaction in small water droplets was obtained using copper (I) acetate as the raw material with the appropriate addition of chelating agents (n-propylamine or benzylamine). A transparent yellowish suspension containing Cu 2 O nanoparticles (ME-Cu 2 O suspension) was prepared at room temperature, using cyclohexane or benzene as a hydrophobic solvent. The average sizes of the Cu 2 O nanoparticles obtained in this case were estimated to be 3.9 and 6.2 nm, respectively. Cu 2 O thin film (average size 5 24.6 nm) and a hybrid composite of Cu 2 O nanoparticles with a polymer matrix (average size 5 5.5 nm) were also prepared from a ME-Cu 2 O suspension. Optical absorption study revealed that direct band gaps of the Cu 2 O thin film (2.50 eV) and the hybrid composite (2.65 eV) were much greater than that of bulk Cu 2 O (2.17 eV), as a result of quantum size effect in Cu 2 O. The photoluminescence of the obtained Cu 2 O nanoparticles was measured at 12 K. The present study provides a new promising method to fabricate well-crystallized Cu 2 O nanoparticles of single nanometer sizes.

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Synthesis of oxide nanoparticles embedded in polyimide

Cited by 33 publications

References 10 publications

Nanoparticles fabricated by selective reaction of Fe100−xPtx alloy films during imidization of polyamic acid

Nanoparticles fabricated by selective reaction of Fe100−xPtx alloy films during imidization of polyamic acid

Enhanced of electrical characteristics of nano-crystal floating gate memory with In2O3 nano-particles embedded in polyimide

Optical Properties and Fabrication of Cuprous Oxide Nanoparticles by Microemulsion Method

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