The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 20, 2024
Filed:
May. 23, 2013
International Business Machines Corporation, Armonk, NY (US);
Egypt Nanotechnology Center, Cairo, EG;
Wanda Andreoni, Adliswil, CH;
Alessandro Curioni, Rueschlikon, CH;
Petr Khomyakov, Rueschlikon, CH;
Jeehwan Kim, Los Angeles, CA (US);
Devendra K. Sadana, Pleasantville, NY (US);
Nasser D. Afify, Giza, EG;
INTERNATIONA BUSINESS MACHINES CORPORATION, Armonk, NY (US);
EGYPT NANOTECHNOLOGY CENTER, Cairo, EG;
Abstract
Photovoltaic device with band-stop filter. The photovoltaic device includes an amorphous photovoltaic material and a band-stop filter structure having a stopband extending from a lower limiting angular frequency ω≥0 to an upper limiting angular frequency ωwhere ω>ω. The band-stop filter structure is arranged in the photovoltaic device relative to the photovoltaic material in order to attenuate electromagnetic radiations reaching the photovoltaic material with angular frequencies of ω* in the stopband, so that ω<ω*<ω. The angular frequencies ω* correspond to electronic excitations ℏω* from valence band tail (VBT) states of the amorphous photovoltaic material to conduction band tail (CBT) states of the amorphous photovoltaic material.