Title: Photoconductive charge trapping apparatus

Abstract

Techniques, systems, and devices are disclosed for implementing a photoconductive device performing bulk conduction. In one exemplary aspect, a photoconductive device is disclosed. The device includes a light source configured to emit light; a crystalline material positioned to receive the light from the light source, wherein the crystalline material is doped with a dopant that forms a mid-gap state within a bandgap of the crystalline material to control a recombination time of the crystalline material; a first electrode coupled to the crystalline material to provide a first electrical contact for the crystalline material, and a second electrode coupled to the crystalline material to provide a second electrical contact for the crystalline material, wherein the first and the second electrodes are configured to establish an electric field across the crystalline material, and the crystalline material is configured to exhibit a substantially linear transconductance in response to receiving the light.

Inventors:

Sampayan, Stephen; Grivickas, Paulius Vytautas; Sampayan, Kristin Cortella

Issue Date:

2022-06-21

Research Org.:

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Opcondys, Inc., Manteca, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1893062

Patent Number(s):

11366401

Application Number:

16/630,273

Assignee:

Lawrence Livermore National Security, LLC (Livermore, CA); Opcondys, Inc. (Manteca, CA)

Patent Classifications (CPCs):

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

G - PHYSICS G03 - PHOTOGRAPHY G03G - ELECTROGRAPHY

Show more

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

G02B6/4295 - {coupling with semiconductor devices activated by light through the light guide, e.g. thyristors, phototransistors}

G - PHYSICS G03 - PHOTOGRAPHY G03G - ELECTROGRAPHY

G03G5/04 - Photoconductive layers

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

H01L31/09 - Devices sensitive to infra-red, visible or ultraviolet radiation
H01L31/101 - Devices sensitive to infra-red, visible or ultra-violet radiation
H01L31/173 - formed in, or on, a common substrate

H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03K - PULSE TECHNIQUE

H03K17/78 - using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled

Show less

DOE Contract Number:  

AC52-07NA27344

Resource Type:

Patent

Resource Relation:

Patent File Date: 09/22/2017

Country of Publication:

United States

Language:

English