Results 91 to 100 of about 296,490 (359)

Modified Chemical Bath Deposition of Tin Oxide for All‐Scalable Perovskite Solar Modules

open access: yesAdvanced Optical Materials, EarlyView.
A stable and scalable chemical bath deposition method for SnOx electron transport layer is developed using PbCl2 to control hydroxide levels. The resulting films enable smooth morphology and excellent optoelectronic properties. Perovskite solar cells fabricated on these T‐SnOx layers achieve 24.5% efficiency and 1000 h operational stability.
Muhammad Awais   +10 more
wiley   +1 more source

A Novel Optimal Joint Resource Allocation Method in Cooperative Multicarrier Networks: Theory and Practice

open access: yesSensors, 2016
With the increasing demands for better transmission speed and robust quality of service (QoS), the capacity constrained backhaul gradually becomes a bottleneck in cooperative wireless networks, e.g., in the Internet of Things (IoT) scenario in joint ...
Yuan Gao   +8 more
doaj   +1 more source

The AMSC mobile satellite system: Design summary and comparative analysis [PDF]

open access: yes
Mobile satellite communications will be provided in the United States by the American Mobile Satellite Consortium (AMSC). Telesat Mobile, Inc. (TMI) and AMSC are jointly developing MSAT, the first regional Mobile Satellite Service (MSS) system. MSAT will
Noreen, Gary K.
core   +1 more source

Single‐Emitter White OLEDs via Microcavity Spectral Engineering

open access: yesAdvanced Optical Materials, EarlyView.
This research introduces a simple, eco‐friendly approach for fabricating ITO‐free white OLEDs by converting blue emission into broadband white light using microcavity engineering. The emitted color can be adjusted by changing the cavity thickness, offering a scalable method ideal for sustainable lighting applications Abstract White organic light ...
Manish Kumar   +5 more
wiley   +1 more source

Direct Broadcast Satellite: Radio Program [PDF]

open access: yes
NASA is committed to providing technology development that leads to the introduction of new commercial applications for communications satellites. The Direct Broadcast Satellite-Radio (DBS-R) Program is a joint effort between The National Aeronautics and
Hollansworth, James E.
core   +1 more source

Ultrabright Fiber‐Coupled Polarization‐Entangled Photon Source with Spectral Brightness Surpassing 2.0 MHz mW−1 nm−1

open access: yesAdvanced Photonics Research, EarlyView.
In this study, it implements a high‐efficiency polarization‐entangled photon source based on single‐mode fiber coupling with a spectral brightness exceeding 2.0 MHz mW−1 nm−1, utilizing a spatial mode‐matching technique. The results of this study provide a more intuitive and practical guide for implementing high‐efficiency quantum light sources ...
Kyungdeuk Park   +4 more
wiley   +1 more source

Determination of Vibrational Population Distribution for the N2+ (1N) Ion Band System from Spacelab 1 [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1989
The Spacelab 1 data represented the first multiband spectral measurements of the N2+ first negative ion bands system in the thermospheric dayglow, and the first opportunity to make a detailed comparison of the vibrational and rotational distributions ...
Jong Won Eun
doaj  

Conceptual design of a synchronous Mars telecommunications satellite [PDF]

open access: yes
Future missions to Mars will require a communications system to link activities on the Martian surface with each other and with mission controllers on Earth.
Badi, Deborah M.   +3 more
core   +1 more source

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