公开(公告)号：US12088118B2

公开(公告)日：2024-09-10

申请号：US17922859

申请日：2021-05-11

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Meiwei Kong ,  Boon S. Ooi ,  Tien Khee Ng

IPC: H02J50/30 ,  H02J7/35 ,  H02J50/00 ,  H04B10/112

CPC classification number: H02J50/30 ,  H02J7/35 ,  H02J50/001 ,  H04B10/112 ,  H02J2300/24

Abstract: An optical wireless communication receiver includes one or more harvesting solar cells configured to transform light into electrical power; one or more communication solar cells configured to transform light into an electrical signal embedding information; a rechargeable battery configured to store the electrical power generated by the one or more harvesting solar cells; a communication module configured to decode the electrical signal generated by the one or more communication solar cells and extract the information; a first switch configured to connect the one or more harvesting solar cells to the rechargeable battery for a harvesting-first state, and to the communication module for a communication-second state; a second switch configured to connect the one or more communication solar cells to the communication module for a communication-first state, and to the rechargeable battery for a harvesting-second state; and a microprocessor configured to control the first and second switches.

公开(公告)号：US11572984B2

公开(公告)日：2023-02-07

申请号：US17245896

申请日：2021-04-30

Applicant: King Abdullah University of Science and Technology

Inventor： Boon S. Ooi ,  Bilal Janjua ,  Chao Shen ,  Chao Zhao ,  Tien Khee Ng

IPC: H01L33/06 ,  F21K9/00 ,  H01L33/08 ,  H01L33/32 ,  H04B10/116 ,  H04B10/11 ,  F21Y115/10 ,  F21Y115/30

Abstract: Embodiments of the present disclosure describe a white light illumination system using InGaN-based orange nanowires (NWs) LED, in conjunction with a blue LD for high speed optical wireless communications. By changing the relative intensities of an ultrabroad linewidth orange LED and narrow-linewidth blue LD components, a hybrid LED/LD device achieves correlated color temperature (CCT) ranging from 3000 K to above 6000 K with color rendering index (CRI) values reaching 83.1. Orange-emitting NWs LED are utilized as an active-phosphor, while a blue LD was used for both color mixing and optical wireless communications.

公开(公告)号：US11529605B2

公开(公告)日：2022-12-20

申请号：US16331624

申请日：2017-09-08

Applicant: King Abdullah University of Science and Technology

Inventor： Rami Tarek El Afandy ,  Mohamed Ebaid Abdrabou Hussein ,  Boon S. Ooi ,  Tien Khee Ng

IPC: H01L21/02 ,  B01J19/12 ,  C01B3/04 ,  C01B13/02 ,  C25B11/02 ,  H01L29/20 ,  C25B1/55

Abstract: Devices for photoelectrodes for water splitting based on indium nanowires on flexible substrates as well as methods of manufacture by transferring nanowire arrays to flexible substrates.

公开(公告)号：US11158763B2

公开(公告)日：2021-10-26

申请号：US16838299

申请日：2020-04-02

Applicant: King Abdullah University of Science and Technology

Inventor： Boon S. Ooi ,  Aditya Prabaswara ,  Bilal Janjua ,  Tien Khee Ng

IPC: H01L33/24 ,  H01L33/00 ,  H01L33/06 ,  H01L33/08 ,  H01L33/42 ,  H01L33/40 ,  H01L33/16 ,  H01L33/32 ,  H01L33/38 ,  H01L33/62 ,  H01L33/18

Abstract: A dislocation-free GaN/InGaN-based nanowires-LED epitaxially grown on a transparent, electrically conductive template substrate. The simultaneous transparency and conductivity are provided by a thin, translucent metal contact integrated with a quartz substrate. The light transmission properties of the translucent metal contact are tunable during epitaxial growth of the nanowires LED. Transparent light emitting diodes (LED) devices, optical circuits, solar cells, touch screen displays, and integrated photonic circuits can be implemented using the current platform.

公开(公告)号：US10884268B2

公开(公告)日：2021-01-05

申请号：US16471789

申请日：2017-12-28

Applicant: King Abdullah University of Science and Technology

Inventor： Boon S. Ooi ,  Aditya Prabaswara ,  Bilal Janjua ,  Tien Khee Ng

IPC: F21K9/64 ,  G02F1/017 ,  F21K9/62 ,  F21K9/68 ,  F21K9/69 ,  H01L27/15 ,  H01L33/24 ,  H01L33/36 ,  F21Y115/30 ,  F21Y113/13 ,  H01L33/06 ,  H01L33/32

Abstract: A system and method providing correlated color temperature-tunable (CCT-tunable) white light using a laser diode(s) in conjunction with a III-Nitride nanowires-based LED element grown on a semi-transparent substrate. The tunability spans across yellow, amber, and red wavelengths and can be implemented by current injection. The current-dependent broad wavelength tunability enables control of wide range of CCT values (intensity, peak wavelength, and spectral coverage). The broad coverage in the yellow-amber-red color regime mimics that of a passive yellow phosphor, while the injection of current into the LED element defines an active phosphor element. The semi-transparent active phosphor element allows direct transmission of light from a laser diode(s) for achieving extreme wide tunability of CCT.

公开(公告)号：US10784410B2

公开(公告)日：2020-09-22

申请号：US16315081

申请日：2017-07-25

Applicant: King Abdullah University of Science and Technology

Inventor： Tien Khee Ng ,  Chao Zhao ,  Davide Priante ,  Boon S. Ooi ,  Mohamed Ebaid Abdrabou Hussein

IPC: H01L33/56 ,  H01L33/44 ,  C25B1/00 ,  H01L31/0216 ,  C25B1/04 ,  H01L31/18 ,  H01L31/0304 ,  H01L33/20 ,  H01L33/32

Abstract: Gallium nitride based semiconductors are provided having one or more passivated surfaces. The surfaces can have a plurality of thiol compounds attached thereto for enhancement of optoelectronic properties and/or solar water splitting properties. The surfaces can also include wherein the surface has been treated with chemical solution for native oxide removal and/or wherein the surface has attached thereto a plurality of nitrides, oxides, insulating compounds, thiol compounds, or a combination thereof to create a treated surface for enhancement of optoelectronic properties and/or solar water splitting properties. Methods of making the gallium nitride based semiconductors are also provided. Methods can include cleaning a native surface of a gallium nitride semiconductor to produce a cleaned surface, etching the cleaned surface to remove oxide layers on the surface, and applying single or multiple coatings of nitrides, oxides, insulating compounds, thiol compounds, or a combination thereof attached to the surface.

公开(公告)号：US12184329B2

公开(公告)日：2024-12-31

申请号：US17792280

申请日：2021-01-06

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Boon S. Ooi ,  Omar Alkhazragi ,  Tien Khee Ng

IPC: H04B10/116 ,  H04B10/2519 ,  H04B10/61

Abstract: A visible-light communication and illumination array includes a substrate and plural surface-emitting superluminescent diodes, SLDs, distributed across the substrate. A first set of SLDs of the plural SLDs generates a first light beam having substantially a first wavelength, a second set of SLDs of the plural SLDs generates a second light beam having substantially a second wavelength, and a third set of SLDs of the plural SLDs generates a third light beam having substantially a third wavelength. The array further includes a controller configured to encode at least one of the first light beam, the second light beam and the third light beam to transmit information. A combination of the first light beam, the second light beam and the third light beam produces white light.

公开(公告)号：US11438074B2

公开(公告)日：2022-09-06

申请号：US17413700

申请日：2019-11-26

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Boon S. Ooi ,  Chun Hong Kang ,  Tien Khee Ng ,  Osman M. Bakr ,  Ibrahim Dursun ,  Lutfan Sinatra ,  Marat Lutfullin

IPC: H04B10/00 ,  H04B10/69 ,  C09K11/66 ,  H04B10/116 ,  H04B10/67

Abstract: A high-speed, wavelength-converting receiver that includes a housing; a high-speed, wavelength-converting layer attached to the housing and configured to absorb a first light having a first wavelength range and emit a second light having a second wavelength range, which is different from the first wavelength range; and a high-speed photodetector attached to the housing and having an active face configured to absorb the second light having the second wavelength range and generate an electrical signal. The active face of the photodetector is fully placed within the housing.

公开(公告)号：US11025346B2

公开(公告)日：2021-06-01

申请号：US16863356

申请日：2020-04-30

Applicant: King Abdullah University of Science and Technology

Inventor： Boon S. Ooi ,  Bilal Janjua ,  Chao Shen ,  Hassan M. Oubei ,  Tien Khee Ng

IPC: H04B13/02 ,  H04B10/80 ,  H04L27/26 ,  H04B10/564 ,  H01S5/00 ,  H04B10/116

Abstract: Embodiments of the present disclosure describe an underwater optical communication and illumination system employing laser diodes directly encoded with data, including spectrally efficient orthogonal frequency division multiplex quadrature amplitude modulation (QAM-OFDM) data. A broadband light source may be utilized to provide both illumination to an underwater field of interest and underwater optical communication from the field of interest to a remote location.

公开(公告)号：US11018764B2

公开(公告)日：2021-05-25

申请号：US16326624

申请日：2017-08-31

Applicant: King Abdullah University of Science and Technology

Inventor： Kihong Park ,  Hassan M. Oubei ,  Boon S. Ooi ,  Mohamed-Slim Alouini

IPC: H04B10/11 ,  H04B10/116 ,  H04J14/00 ,  G02B26/08 ,  H04B10/114 ,  H04B10/00

Abstract: An optical mirror diversity receiver for a visible light communication system is provided with an array of photodiodes each having an optical-signal-receiving area, with a mirror positioned between an adjacent pair of photodiodes to preferentially redirect light toward one of the photodiodes while also blocking light that would otherwise be received at the photodiode. An angle-aided mirror diversity receiver is also provided with surfaces of the photodiodes aligned relative to the mirror to yield reductions in correlation.