公开(公告)号：US20210396895A1

公开(公告)日：2021-12-23

申请号：US17288205

申请日：2019-10-25

Applicant: National Research Council of Canada

Inventor： Ryan Hunter GRIFFIN ,  Neil GRADDAGE

IPC: G01T7/06 ,  H05K3/12 ,  H05K3/00 ,  H05K1/03

Abstract: An electrostatic concentrator for use in radon detection, comprising of a plastic sheet having conductive electrodes patterned onto the surface. The sheet is patterned and cut in such a way that it can be assembled into a three-dimensional shape (e.g. a cone), such that when a voltage is applied to the electrodes an electrostatic field is created for propelling radon progeny towards a sensor on which it can be detected.

公开(公告)号：US20240178793A1

公开(公告)日：2024-05-30

申请号：US17993936

申请日：2022-11-24

Applicant: National Research Council of Canada

Inventor： Salima ALEM ,  Ye TAO ,  Jianping LU ,  Badrou Reda AICH ,  Neil GRADDAGE ,  Zhiyi (Frank) ZHANG

IPC: H02S99/00 ,  H02S50/10

CPC classification number: H02S99/00 ,  H02S50/10 ,  H10K30/50

Abstract: Methods and systems for reducing solar cell degradation are provided. The methods and systems related to frequently applying large reverse bias current-voltage (J-V) sweeps to the cell to reduce the rates of internal degradation of the solar cells. The frequent sweeps serve to detrap charge carriers formed in the cell due to photo-oxidative damage. This detrapping reduces the rate of power conversion efficiency (PCE) degradation throughout the life of the solar cell.