(19)
(11) EP 3 980 586 A1

(12)

(43) Date of publication:
13.04.2022 Bulletin 2022/15

(21) Application number: 20819441.5

(22) Date of filing: 04.06.2020
(51) International Patent Classification (IPC): 
C30B 25/10(2006.01)
H01L 21/02(2006.01)
C30B 29/42(2006.01)
(52) Cooperative Patent Classification (CPC):
C30B 29/42; H01L 31/03048; H01L 31/0735; H01L 31/0687; H01L 31/109; H01L 31/1035; Y02E 10/544
(86) International application number:
PCT/US2020/036208
(87) International publication number:
WO 2020/247691 (10.12.2020 Gazette 2020/50)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 04.06.2019 US 201916431521
24.07.2019 US 201916521458
09.03.2020 US 202016812668

(71) Applicant: Solar Junction Corporation
Tempe, Arizona 85282 (US)

(72) Inventors:
  • MISRA, Pranob
    Santa Clara, California 95051 (US)
  • JONES-ALBERTUS, Rebecca Elizabeth
    Washington, District of Columbia 20012 (US)
  • LIU, Ting
    San Jose, California 95127 (US)
  • FUSHMAN, Ilya
    Palo Alto, California 94301 (US)
  • YUEN, Homan
    Santa Clara, California 95054 (US)

(74) Representative: Branderhorst, Matthijs Pieter Arie 
Marks & Clerk LLP Fletcher House Heatley Road The Oxford Science Park
Oxford OX4 4GE
Oxford OX4 4GE (GB)

   


(54) DILUTE NITRIDE OPTICAL ABSORPTION LAYERS HAVING GRADED DOPING