Accession Number:

AD1078468

Title:

Piezoluminescence: Controlled Direct Conversion of Mechanical Energy into Light

Descriptive Note:

Technical Report,01 Nov 2017,31 Jul 2018

Corporate Author:

Pennsylvania State University University Park United States

Personal Author(s):

Report Date:

2018-10-31

Pagination or Media Count:

9.0

Abstract:

Piezoluminescence PZL is a promising energy-conversion phenomena for mechanically driven photon sources, such as displays, lighting, bioimaging, and sensing. However, realization of practical PZL materials is challenging, and currently, none of the available components and devices utilize this effect due to extremely low light intensity and restricted control of the emission wavelength. This is a new emerging field of research with limited number of publications and even less understanding of the basic physics controlling the coupling of mechanical strain with interband transitions and charge recombination reactions. The scientific approach presented here provides clear direction to systematically elucidate the principles governing the intensity and wavelength of PZL emission. Defect chemistry, band structure, and nanostructured composite architecture will be investigated to improve the light emission intensity. There are many ways to introduce intrinsic effect into a given material system e.g., gaseous diffusion which results in new energy levels between its bandgap. Hydrogenation treatment in conjunction with the composition design will be utilized to improve the intensity.

Subject Categories:

  • Non-electrical Energy Conversion

Distribution Statement:

APPROVED FOR PUBLIC RELEASE