Results 11 to 20 of about 54,609 (148)

Electrospun Nanofibers prepared with CdTe QDs, CdTeSe QDs and CdTe/CdS Core-shell QDs

open access: yesCelal Bayar Üniversitesi Fen Bilimleri Dergisi, 2018
In this study, a novel method is used to prepare water-soluble CdTe, CdTeSe quantum dots (QDS) and CdTe/CdS core-shell QDs by using Te, Se, NaBH4, and CdCl2 as precursors. Electrospinning method is used to obtain polyvinyl alcohol (PVA)/QDs composite nanofibers.
BAŞLAK, Canan   +2 more
openaire   +3 more sources

Design and simulation of type-I graphene/Si quantum dot superlattice for intermediate-band solar cell applications

open access: yesFrontiers of Optoelectronics, 2022
Recent experiments suggest graphene-based materials as candidates for use in future electronic and optoelectronic devices. In this study, we propose a new multilayer quantum dot (QD) superlattice (SL) structure with graphene as the core and silicon (Si ...
Masumeh Sarkhoush   +2 more
doaj   +1 more source

Predictors for Moderate to Severe Acute Postoperative Pain after Cesarean Section

open access: yesPain Research and Management, 2016
Background. Moderate to severe postoperative pain affects performance of daily activities and it contributes to persistent postoperative pain. In patients submitted to cesarean section, this pain can also interfere with women’s ability to care for their ...
Natalia de Carvalho Borges   +4 more
doaj   +1 more source

Stimulation of Cysteine-Coated CdSe/ZnS Quantum Dot Luminescence by meso-Tetrakis (p-sulfonato-phenyl) Porphyrin

open access: yesNanoscale Research Letters, 2018
Interaction between porphyrins and quantum dots (QD) via energy and/or charge transfer is usually accompanied by reduction of the QD luminescence intensity and lifetime. However, for CdSe/ZnS-Cys QD water solutions, kept at 276 K during 3 months (aged QD)
Gustavo G. Parra   +7 more
doaj   +1 more source

External-quantum-efficiency enhancement in quantum-dot solar cells with a Fabry–Perot light-trapping structure

open access: yesHeliyon, 2023
In this work, we have experimentally investigated the impact of light trapping on the performance of InAs/GaAs quantum dot (QD) solar cells. To increase the amount of absorbed near-infrared photons, we fabricated a thin-film QD solar cell with a backside
Yusuke Oteki, Yoshitaka Okada
doaj   +1 more source

Modificação química de sílica gel obtida de areia e seu uso na remoção de Cu2+, Zn2+, Mn2+

open access: yesEclética Química, 2018
Neste trabalho, foi obtida sílica gel a partir de uma fonte natural, a areia, modificada quimicamente com a incorporação em sua superfície de grupos básicos e aplicada na remoção de metais pesados do meio aquoso (Cu2+, Zn2+, Mn2+).
Elaine Alves de Faria Braga   +1 more
doaj   +1 more source

High-efficiency InAs/GaAs quantum dot intermediate band solar cell achieved through current constraint engineering

open access: yesNext Materials, 2023
In this work, a novel device concept for improving the efficiency and field operation of conventional InAs/GaAs quantum dot (QD) based intermediate band solar cell (IBSC) with the feature of current constraint (CC-QD-IBSC) was proposed and evaluated from
Tomah Sogabe   +6 more
doaj   +1 more source

Gas Sensitivity of In0.3Ga0.7As Surface QDs Coupled to Multilayer Buried QDs [PDF]

open access: yesPhotonic Sensors, 2020
AbstractA detailed analysis of the electrical response of In0.3Ga0.7As surface quantum dots (SQDs) coupled to 5-layer buried quantum dots (BQDs) is carried out as a function of ethanol and acetone concentration while temperature-dependent photoluminescence (PL) spectra are also analyzed.
Liwei Zhang   +7 more
openaire   +3 more sources

Policy of Interests Support at Khanh Hoa after a year

open access: yesTạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kinh tế và Quản trị kinh doanh, 2021
Sau hơn 4 tháng triển khai các quyết định (QĐ) hỗ trợ lãi suất (HTLS) theo gói kích cầu của Chính phủ, tính đến ngày 23-7, dư nợ cho vay HTLS của các ngân hàng thương mại (NHTM) trên địa bàn tinh Khánh Hòa đạt 4.745,5 tỷ đồng, chiếm 32,39% tổng dư nợ cho
Trần Văn Hải
doaj  

Photoluminescence enhancement by deterministically site-controlled, vertically stacked SiGe quantum dots

open access: yesScientific Reports, 2021
The Si/SiGe heterosystem would be ideally suited for the realization of complementary metal-oxide-semiconductor (CMOS)-compatible integrated light sources, but the indirect band gap, exacerbated by a type-II band offset, makes it challenging to achieve ...
Jeffrey Schuster   +7 more
doaj   +1 more source

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