公开(公告)号：US09910215B2

公开(公告)日：2018-03-06

申请号：US14493222

申请日：2014-09-22

Applicant: Massachusetts Institute of Technology

Inventor： Vladimir Bulovic ,  David H. Friend ,  Moungi Bawendi

IPC: G02B6/02 ,  F21V8/00 ,  B05D3/12 ,  G02B6/26 ,  G02B6/12

CPC classification number: G02B6/02 ,  B05D3/12 ,  G02B6/001 ,  G02B6/004 ,  G02B6/005 ,  G02B6/0229 ,  G02B6/26 ,  G02B2006/1213

Abstract: An optical structure can include a nanocrystal on a surface of an optical waveguide in a manner to couple the nanocrystal to the optical field of light propagating through the optical waveguide to generate an emission from the nanocrystal. The structure can be configured to restrict propagation of the emission from the nanocrystal along the waveguide.

公开(公告)号：US20180019421A1

公开(公告)日：2018-01-18

申请号：US15630441

申请日：2017-06-22

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Vladimir Bulovic ,  Richard Royal Lunt

IPC: H01L51/42 ,  H01L27/30 ,  H01L51/44

Abstract: A transparent photovoltaic cell and method of making are disclosed. The photovoltaic cell may include a transparent substrate and a first active material overlying the substrate. The first active material may have a first absorption peak at a wavelength greater than about 650 nanometers. A second active material is disposed overlying the substrate, the second active material having a second absorption peak at a wavelength outside of the visible light spectrum. The photovoltaic cell may also include a transparent cathode and a transparent anode.

公开(公告)号：US09755150B2

公开(公告)日：2017-09-05

申请号：US13785476

申请日：2013-03-05

Applicant: Massachusetts Institute of Technology

Inventor： Timothy M. Swager ,  Vladimir Bulovic ,  Ggoch Ddeul Han ,  Trisha L. Andrew

IPC: B32B9/00 ,  H01L51/00 ,  B82Y30/00 ,  C01B31/02 ,  C01B31/04 ,  B82Y10/00 ,  H01L51/42

CPC classification number: H01L51/0047 ,  B82Y10/00 ,  B82Y30/00 ,  C01B32/158 ,  C01B32/182 ,  H01L51/0003 ,  H01L51/4253 ,  Y02E10/549 ,  Y10S977/738 ,  Y10S977/746 ,  Y10S977/948

Abstract: Embodiments described herein provide functionalized carbon nanostructures for use in various devices, including photovoltaic devices (e.g., solar cells). In some embodiments, carbon nanostructures substituted with at least one cyclobutyl and/or cyclobutenyl group are provided. Devices including such materials may exhibit increased efficiency, increased open circuit potential, high electron/hole mobility, and/or low electrical resistance.

公开(公告)号：US20160237343A1

公开(公告)日：2016-08-18

申请号：US15045028

申请日：2016-02-16

Applicant: Massachusetts Institute of Technology

Inventor： Marc A. Baldo ,  Daniel N. Congreve ,  Nicholas John Thompson ,  Mark W.B. Wilson ,  Mengfei Wu ,  Moungi G. Bawendi ,  Vladimir Bulovic

IPC: C09K11/56 ,  G01J9/00 ,  H01L51/50

CPC classification number: C09K11/562 ,  G01J1/58

Abstract: The present invention generally relates to composition and methods for upconverting light. In some embodiments, the composition and methods comprise an organic material, a nanocrystal, and a ligand capable of facilitating energy transfer between the nanocrystal and the organic material. In certain embodiments, the nanocrystal has a first excited energy state with an energy greater than a triplet state of the organic material. The organic material, in some embodiments, may be aromatic and/or include one or more pi-conjugated carbon-carbon double bonds. In some cases, incident light may be absorbed by the nanocrystal to produce triplet excitons. The triplet excitons may then transfer from the nanocrystal to the organic material and undergo triplet-triplet annihilation, creating a singlet state of approximately twice the energy of the triplet exciton. In certain embodiments, the singlet state fluoresces, resulting in the formation of a high energy photon.

Abstract translation: 本发明一般涉及用于上变频光的组合物和方法。 在一些实施方案中，组合物和方法包括能够促进纳米晶体和有机材料之间的能量转移的有机材料，纳米晶体和配体。 在某些实施方案中，纳米晶体具有能量大于有机材料的三线态的第一激发能态。 在一些实施方案中，有机材料可以是芳族的和/或包括一个或多个π-共轭碳 - 碳双键。 在一些情况下，入射光可以被纳米晶体吸收以产生三线态激子。 然后，三线态激子可以从纳米晶体转移到有机材料并经历三重态三重态湮灭，形成三线态激子的能量的大约两倍的单线态。 在某些实施方案中，单线态发荧光，导致形成高能光子。

公开(公告)号：US09391423B2

公开(公告)日：2016-07-12

申请号：US14541071

申请日：2014-11-13

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

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

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

CPC classification number: H01S3/1053 ,  B81B2201/02 ,  B81B2201/042 ,  B81C1/00158 ,  B81C1/00634 ,  B81C2201/0194 ,  G01L1/24 ,  G01L9/0005 ,  G01L9/0072 ,  G01L11/02 ,  G02B26/001 ,  H01L29/84 ,  H01S3/07 ,  H01S3/08059 ,  H01S3/0933 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/106 ,  H01S3/1305 ,  H01S3/16 ,  H01S3/1693

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.

Abstract translation: 本公开涉及在无溶剂环境中微机电系统（“MEMS”）的微接触印刷的方法和装置。 所公开的实施方案使得能够在聚对二甲苯层上形成复合膜并将复合结构转移到接收结构以形成由复合膜覆盖的一个或多个微腔。 聚对二甲苯膜的厚度可以在约100nm-2微米的范围内; 200nm-1微米，200-300nm，300-500nm，500nm至1微米和1-30微米。 接下来，在聚对二甲苯之上形成一个或多个二次层以产生复合膜。 复合膜可以具有约100nm至700nm至几微米的厚度。 可以测量复合膜的响应于外力的偏转以提供无接触检测器。 相反，可以使用外部偏压来致动复合膜，以产生与施加的偏压相称的偏转。 所公开的实施例的应用包括可调激光器，麦克风，微型扬声器，远程激活的无接触压力传感器等。

公开(公告)号：US20130186768A1

公开(公告)日：2013-07-25

申请号：US13733963

申请日：2013-01-04

Applicant: Massachusetts Institute of Technology

Inventor： Vladimir Bulovic ,  Richard R. Lunt ,  Elizabeth R. Young

IPC: C25B1/04

CPC classification number: C25B1/04 ,  C25B1/003 ,  C25B9/00 ,  Y02E60/368 ,  Y02E70/10 ,  Y02P20/134

Abstract: The present invention generally relates to articles, devices, systems, and methods relating to the storage of solar energy and/or solar energy utilization. In some embodiments, the articles, devices, and systems may be used to carry out photocatalytic reactions, for example, the photocatalytic production of oxygen and/or hydrogen gases from water.

Abstract translation: 本发明一般涉及与太阳能和/或太阳能利用的储存有关的物品，装置，系统和方法。 在一些实施方案中，制品，装置和系统可用于进行光催化反应，例如从水中的氧和/或氢气的光催化生产。

公开(公告)号：US11843915B2

公开(公告)日：2023-12-12

申请号：US17508133

申请日：2021-10-22

Applicant: Massachusetts Institute of Technology

Inventor： Jinchi Han ,  Jeffrey H. Lang ,  Vladimir Bulovic

IPC: H04R17/02 ,  H04R1/40 ,  H04R7/12 ,  H04R3/00 ,  H10N30/084 ,  H10N30/88

CPC classification number: H04R17/025 ,  H04R1/403 ,  H04R1/406 ,  H04R3/005 ,  H04R7/127 ,  H10N30/084 ,  H10N30/883 ,  H04R2400/01

Abstract: An active acoustic system includes a thin-film sheet having an array of piezoelectric microstructures embossed in the film. Each piezoelectric microstructure may act as a speaker and/or a microphone. A control circuit is configured to individually address the piezoelectric microstructures to provide a separate voltage signal to, or receive a separate voltage signal from, each piezoelectric microstructure.

公开(公告)号：US11629405B2

公开(公告)日：2023-04-18

申请号：US16514004

申请日：2019-07-17

Applicant: Massachusetts Institute of Technology

Inventor： Vladimir Bulovic ,  Maximilian Hoerantner

IPC: C23C16/455 ,  H01L51/00 ,  C23C16/30 ,  H01L51/42

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：US10794771B2

公开(公告)日：2020-10-06

申请号：US15045011

申请日：2016-02-16

Applicant: Massachusetts Institute of Technology

Inventor： Daniel N. Congreve ,  Nicholas John Thompson ,  Mark W. B. Wilson ,  Mengfei Wu ,  Marc A. Baldo ,  Moungi G. Bawendi ,  Vladimir Bulovic

IPC: G01J9/00 ,  H01L51/50 ,  C09K11/66

Abstract: The present invention generally relates to composition and methods for downconverting light. In some embodiments, the composition and methods comprise an organic material, a nanocrystal, and a ligand capable of facilitating energy transfer between the organic material and the nanocrystal. In certain embodiments, the nanocrystal has a first excited energy state with an energy less than a triplet energy state of the organic material. The organic material, in some embodiments, may be aromatic and/or include one or more pi-conjugated carbon-carbon double bonds. In some cases, incident light may be absorbed by the organic material to produce two triplet excitons. The triplet excitons may then transfer to the nanocrystal via the ligand, where they can undergo recombination, resulting in the formation low energy photons.

公开(公告)号：US10680194B2

公开(公告)日：2020-06-09

申请号：US14993399

申请日：2016-01-12

Applicant: Massachusetts Institute of Technology

Inventor： Patrick R. Brown ,  Geoffrey J. Supran ,  Jeffrey C. Grossman ,  Moungi G. Bawendi ,  Vladimir Bulovic

IPC: F21V14/00 ,  H01L51/50 ,  H01L51/52

Abstract: A light emitting device can include a light source, a first electrode, a second electrode, a first barrier layer, a second barrier layer, and an emitter layer between the first barrier layer and the second barrier layer. A method of controllably generating light can comprise two states: An ON state, wherein an emitter layer of a device (which includes a photoluminescent pixel) is illuminated with a light source in the absence of an electric field, and the emitter layer generates light through photoluminescence; and an OFF state, wherein an emitter layer of a device (which includes a photoluminescent pixel) is illuminated with a light source in the presence of a static or time-varying electric field, and the electric field or induced current results in quenching of the emitter photoluminescence.