公开(公告)号：US11424380B2

公开(公告)日：2022-08-23

申请号：US17136747

申请日：2020-12-29

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Kyoungwon Park

IPC: H02N6/00 ,  H01L31/042 ,  H01L31/055 ,  H02S40/22

Abstract: A sunlight concentrating device may include a quantum dot layer having a first surface and a second surface opposite to each other, a first glass layer in contact with the first surface of the quantum dot layer, and a second glass layer in contact with the second surface of the quantum dot layer, and further include a low-refractive layer provided in a predetermined region of the first surface and/or the second surface of the quantum dot layer. The low-refractive layer is patterned, and a refractive index of the low-refractive layer is smaller than a refractive index of the quantum dot layer. The low-refractive layer totally reflects photons, being permeated from the quantum dot layer into the glass layer(s), between the glass layer(s) and the quantum dot layer so that the photons can move within a section with no loss of light thereby overcoming the theoretical limit of light concentration.