National Technology & Engineering Solutions of Sandia, LLC

Sandia Corporation

University of Texas System

Xiaowang Zhou

F Patrick Doty

Pin Yang

Jose Luis Cruz-Campa

David Zubia

Haoran Deng

Various technologies pertaining to formation or treatment of a thallium bromide crystal to improve the operable lifespan of a device that incorporates the thallium bromide crystal are described herein. In exemplary embodiments, treatments including focused ion beam implantation, selective material removal, and buffer layer application are performed on a thallium bromide crystal to inhibit motion of dislocations toward a region at which an electrical contact is desirably installed. In other exemplary embodiments, a thallium bromide crystal is doped with impurities during formation that inhibit the motion of dislocations in the crystal. In still other exemplary embodiments, a thallium bromide crystal is formed by way of processes that inhibit dislocation formation during crystal growth or eliminate dislocations in an existing thallium bromide mass.

Thallium bromide (TIBr) semiconductors and devices with extended life apparatus, methods, and system

A stabilized scintillator includes a compound corresponding to formula (2) or (3), or activated derivatives thereof:ABB'B&#x2033;X&#x2003;&#x2003;(2)ABB&#x2032;XX&#x2032;&#x2003;&#x2003;(3)wherein A and B are monovalent cations, B&#x2032; is a trivalent cation, X is a halogen, x and y are molar percentages, x+y=1; B&#x2033; is an aliovalent exchange cation that has a different valence than B&#x2032;, X&#x2032; is an aliovalent exchange anion that has a different valence than X. A method of preparing the stabilized scintillator is also disclosed.

Stabilized scintillator

A photovoltaic solar cell comprises a nano-patterned substrate layer. A plurality of nano-windows are etched into an intermediate substrate layer to form the nano-patterned substrate layer. The nano-patterned substrate layer is positioned between an n-type semiconductor layer composed of an n-type semiconductor material and a p-type semiconductor layer composed of a p-type semiconductor material. Semiconductor material accumulates in the plurality of nano-windows, causing a plurality of heterojunctions to form between the n-type semiconductor layer and the p-type semiconductor layer.

Method of making photovoltaic cell

Photovoltaic cell with nano-patterned substrate

The present invention relates to sorohalide compounds having formula ABX, where A is an alkali metal, B is a rare earth metal, and X is a halogen. Optionally, the sorohalide includes a dopant D. Such undoped and doped sorohalides are useful as scintillation materials or phosphors for any number of uses, including for radiation detectors, solid-state light sources, gamma-ray spectroscopy, medical imaging, and drilling applications.

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Livermore, CA, United States of America

Xiaowang Zhou