公开(公告)号：US20190204476A1

公开(公告)日：2019-07-04

申请号：US16302451

申请日：2017-05-22

Applicant: Lightlab Sweden AB

Inventor： Jan-Otto CARLSSON ,  Olesya NIKONOVA

IPC: G02B1/11 ,  C23C18/12 ,  H01J61/35 ,  H01J9/20 ,  H01L33/46

CPC classification number: G02B1/11 ,  C23C18/1204 ,  C23C18/1208 ,  C23C18/1245 ,  C23C18/1254 ,  C23C18/1283 ,  G02B6/001 ,  G02B6/0043 ,  H01J9/20 ,  H01J9/205 ,  H01J61/34 ,  H01J61/35 ,  H01J61/40 ,  H01J63/04 ,  H01L33/44 ,  H01L33/46

Abstract: The present invention generally relates to a method for forming a light extraction layer comprising nanostructures, the method comprising: providing a substrate, the substrate being at least partially transparent to UV light; forming a non-aqueous precursor solution comprising fluorine and an alkaline earth metal to form alkaline earth metal difluoride particles; applying the precursor solution on at least a first side of the substrate; drying the substrate at a first temperature for a first period of time; and baking the substrate at a second temperature, higher than the first temperature, for a second period of time, thereby forming a light extraction nanostructure layer comprising alkaline earth metal difluoride nanostructures on the substrate. The present invention also relates to a light extraction structure and to a UV lamp comprising such an extraction structure.

公开(公告)号：US20180114666A1

公开(公告)日：2018-04-26

申请号：US15571293

申请日：2016-05-16

Applicant: Lightlab Sweden AB

Inventor： Jonas TIRÉN ,  Jan-Otto CARLSSON ,  Olesya NIKONOVA

IPC: H01J1/304 ,  C30B29/16 ,  H01J9/02 ,  H01J63/02 ,  C30B7/10 ,  B82Y40/00

CPC classification number: H01J1/304 ,  B82Y40/00 ,  C30B7/10 ,  C30B7/105 ,  C30B7/14 ,  C30B29/16 ,  H01J1/3044 ,  H01J9/025 ,  H01J63/02 ,  H01J63/06 ,  H01J2201/3043 ,  H01J2201/30496

Abstract: The present invention relates to the field of field emission lighting, and specifically to a method for forming a field emission cathode. The method comprises arranging a growth substrate in a growth solution comprising a Zn-based growth agent, the growth solution having a pre-defined pH-value at room temperature; increasing the pH value of the growth solution to reach a nucleation phase; upon increasing the pH of the solution nucleation starts. The growth phase is then entered by decreasing the pH. The length of the nanorods is determined by the growth time. The process is terminated by increasing the pH to form sharp tips. The invention also relates to a structure for such a field emission cathode and to a lighting arrangement comprising the field emission cathode.