公开(公告)号：US11152227B2

公开(公告)日：2021-10-19

申请号：US16107566

申请日：2018-08-21

Applicant: Massachusetts Institute of Technology

Inventor： Richard Swartwout ,  Farnaz Niroui ,  Vladimir Bulovic ,  Jeffrey H. Lang ,  Joel Jean

IPC: H01L21/56 ,  H01L21/02 ,  H01L23/31 ,  H01L23/10 ,  H01L29/06

Abstract: A method includes encapsulating structures disposed on or over a surface of a substrate in an encapsulant. The method also includes separating the encapsulant from the substrate. An apparatus includes a composite film having structures embedded in an encapsulant. The composite film has a surface with a surface roughness of less than one nm. An apparatus includes an encapsulant film having a surface with indentations formed therein. The surface has a surface roughness apart from the indentations of less than one nm.

公开(公告)号：US20210074872A1

公开(公告)日：2021-03-11

申请号：US17100425

申请日：2020-11-20

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Richard Royal Lunt ,  Vladimir Bulovic ,  Biles Clark Barr

IPC: H01L31/055

Abstract: A visibly transparent luminescent solar concentrator (LSC) is disclosed. The LSC includes a transparent substrate having at least one edge surface. A dye layer is coupled to the substrate, the dye layer having a peak absorption wavelength outside the visible band, the dye layer being configured to re-emit light at a peak emission wavelength outside the visible band, at least a portion of the re-emitted light being waveguided to the edge surface of the substrate. A photovoltaic device is coupled to the edge surface of the transparent substrate, the photovoltaic device being configured to absorb light at the peak emission wavelength and generate electrical energy.

公开(公告)号：US20200024733A1

公开(公告)日：2020-01-23

申请号：US16514004

申请日：2019-07-17

Applicant: Massachusetts Institute of Technology

Inventor： Vladimir Bulovic ,  Maximilian Hoerantner

IPC: C23C16/455 ,  C23C16/30 ,  H01L51/00

Abstract: Disclosed are vapor transport deposition systems and methods for alternating sequential vapor transport deposition of multi-component perovskite thin-films. The systems include multiple vaporizing sources that are mechanically or digitally controlled for high throughput deposition. Alternating sequential deposition provides faster sequential deposition, and allows for reduced material degradation due to different vapor temperatures.

公开(公告)号：US10256596B2

公开(公告)日：2019-04-09

申请号：US15140282

申请日：2016-04-27

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Vladimir Bulovic ,  Jeffrey Hastings Lang ,  Apoorva Murarka ,  Annie I-Jen Wang ,  Wendi Chang

IPC: H01S3/08 ,  H01S3/105 ,  H01S3/106 ,  H01S3/0933 ,  H01S3/0941 ,  H01S3/07 ,  H01S3/16 ,  H01S3/13 ,  G02B26/00 ,  G01L11/02 ,  G01L9/00 ,  H01L29/84 ,  B81C1/00 ,  G01L1/24 ,  H01S3/094

Abstract: The disclosure relates to method and apparatus for micro-contact printing of micro-electromechanical systems (“MEMS”) in a solvent-free environment. The disclosed embodiments enable forming a composite membrane over a parylene layer and transferring the composite structure to a receiving structure to form one or more microcavities covered by the composite membrane. The parylene film may have a thickness in the range of about 100 nm-2 microns; 100 nm-1 micron, 200-300 nm, 300-500 nm, 500 nm to 1 micron and 1-30 microns. Next, one or more secondary layers are formed over the parylene to create a composite membrane. The composite membrane may have a thickness of about 100 nm to 700 nm to several microns. The composite membrane's deflection in response to external forces can be measured to provide a contact-less detector. Conversely, the composite membrane may be actuated using an external bias to cause deflection commensurate with the applied bias. Applications of the disclosed embodiments include tunable lasers, microphones, microspeakers, remotely-activated contact-less pressure sensors and the like.

公开(公告)号：US20180367884A1

公开(公告)日：2018-12-20

申请号：US15956738

申请日：2018-04-18

Applicant: Massachusetts Institute of Technology

Inventor： Apoorva Murarka ,  Vladimir Bulovic ,  Jeffrey H. Lang

IPC: H04R1/10 ,  H04R19/00

Abstract: Briefly, in accordance with one or more embodiments, a headphone device, comprises at least one ear muff comprising a structure to hold the at least one ear muff against an ear of a user, and at least one driver disposed in the at least one ear muff An earbud comprises an earbud housing having a protrusion to fit into an external acoustic meatus or ear canal of a user, and a driver disposed in the earbud housing. The driver comprises an electrostatic acoustic transducer comprising a substrate comprising a first material to function as a first electrode, a dielectric layer coupled with the first material, wherein the dielectric layer has one or more cavities formed therein, and a membrane coupled with the dielectric layer to cover the one or more cavities and to function as a second electrode.

公开(公告)号：US10053622B2

公开(公告)日：2018-08-21

申请号：US13935551

申请日：2013-07-04

Applicant: Massachusetts Institute of Technology

Inventor： Jonathan E. Halpert ,  Jonathan Tischler ,  Moungi G. Bawendi ,  Vladimir Bulovic

IPC: C09K11/06 ,  C09K11/02 ,  C09K11/56 ,  C09K11/88

CPC classification number: C09K11/06 ,  C09K11/025 ,  C09K11/565 ,  C09K11/883 ,  C09K2211/10

Abstract: A composition can include a first moiety capable of being excited to an excited state, and a second moiety capable of accepting excited state energy from the first moiety. The second moiety is capable of emitting light with a FWHM of 15 nm or less when excited. The second moiety can be a J-aggregate and the first moiety can be a semiconductor nanocrystal.

公开(公告)号：US09991076B2

公开(公告)日：2018-06-05

申请号：US14763681

申请日：2014-01-28

Applicant: Massachusetts Institute of Technology

Inventor： Vladimir Bulovic ,  Jeffrey H. Lang ,  Hae-Seung Lee ,  Timothy M. Swager ,  Trisha L. Andrew ,  Matthew Eric D'Asaro ,  Parag Deotare ,  Apoorva Murarka ,  Farnaz Niroui ,  Ellen Sletten ,  Annie I-Jen Wang

IPC: H02N1/00 ,  H01L41/00 ,  H01H59/00 ,  H01H49/00 ,  H01L45/00

CPC classification number: H01H59/0009 ,  H01H49/00 ,  H01L45/00 ,  Y10T156/10

Abstract: Electromechanical devices described herein may employ tunneling phenomena to function as low-voltage switches. Opposing electrodes may be separated by an elastically deformable layer which, in some cases, may be made up of a non-electrically conductive material. In some embodiments, the elastically deformable layer is substantially free of electrically conductive material. When a sufficient actuation voltage and/or force is applied, the electrodes are brought toward one another and, accordingly, the elastically deformable layer is compressed. Though, the elastically deformable layer prevents the electrodes from making direct contact with one another. Rather, when the electrodes are close enough to one another, a tunneling current arises therebetween. The elastically deformable layer may exhibit spring-like behavior such that, upon release of the actuation voltage and/or force, the separation distance between electrodes is restored. Thus, the electromechanical device may be actuated between open and closed switch positions.

公开(公告)号：US20170327740A1

公开(公告)日：2017-11-16

申请号：US15362756

申请日：2016-11-28

Applicant: Massachusetts Institute of Technology

Inventor： Jonathan E. Halpert ,  Polina O. Anikeeva ,  Moungi G. Bawendi ,  Vladimir Bulovic

IPC: C09K11/88 ,  H01L51/50 ,  H01L51/52 ,  H01L51/56 ,  B82Y40/00 ,  B82Y20/00

Abstract: A blue light emitting semiconductor nanocrystal having an quantum yield of greater than 20% can be incorporated in a light emitting device.

公开(公告)号：US20170271604A1

公开(公告)日：2017-09-21

申请号：US15309797

申请日：2015-05-08

Applicant: Massachusetts Institute of Technology

Inventor： Patrick R. Brown ,  Donghun KIM ,  Moungi G. Bawendi ,  Jeffrey C. Grossman ,  Vladimir Bulovic

IPC: H01L51/42 ,  H01L51/00 ,  H01L51/44

CPC classification number: H01L51/426 ,  H01L31/0296 ,  H01L31/03845 ,  H01L51/0077 ,  H01L51/0558 ,  H01L51/441 ,  H01L2251/301 ,  Y02E10/549

Abstract: A method of improving performance of a photovoltaic device can include modifying a surface energy level of a nanocrystal through ligand exchange. A photovoltaic device can include a layer that includes a nanocrystal with a surface energy modified through ligand exchange.

公开(公告)号：US09472723B2

公开(公告)日：2016-10-18

申请号：US14091355

申请日：2013-11-27

Applicant: Massachusetts Institute of Technology

Inventor： Vladimir Bulovic ,  Katherine Wei Song ,  Ronny Costi

IPC: H01L33/36 ,  H01L21/02 ,  H01L51/50 ,  H01L27/28 ,  H01L33/00 ,  H01L33/06 ,  H01L51/42

CPC classification number: H01L33/36 ,  H01L21/02057 ,  H01L27/286 ,  H01L33/005 ,  H01L33/0087 ,  H01L33/06 ,  H01L51/4233 ,  H01L51/502 ,  Y02E10/549

Abstract: A method of depositing semiconductor nanocrystals on a surface can include applying a voltage to the nanocrystals.

Abstract translation: 在表面上沉积半导体纳米晶体的方法可以包括向纳米晶体施加电压。