MULTIJUNCTION SOLAR CELLS HAVING A GRADED-INDEX STRUCTURE

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(11)

EP 3 836 231 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	18.08.2021 Bulletin 2021/33

(43)	Date of publication:
	16.06.2021 Bulletin 2021/24

(21)	Application number: 20152413.9

(22)	Date of filing: 17.01.2020

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International Patent Classification (IPC):

H01L 31/054^(2014.01)
H01L 31/0304^(2006.01)

H01L 31/0687^(2012.01)

(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

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Priority:

11.12.2019 US 201916710922

(71)	Applicant: SolAero Technologies Corp., a corporation of the state of Delaware
	Albuquerque, NM 87123 (US)

(72)	Inventor:
	DERKACS, Daniel Albuquerque, NM New Mexico 87111 (US)

(74)	Representative: de Rooij, Mathieu Julien
	Bardehle Pagenberg S.L. Avenida Diagonal 420, 1° 1ª 08037 Barcelona 08037 Barcelona (ES)

(54)	MULTIJUNCTION SOLAR CELLS HAVING A GRADED-INDEX STRUCTURE

(57) A multijunction solar cells that include one or more graded-index structures disposed directly above the growth substrate beneath a base layer of a solar subcells. In some embodiments, the graded-index reflector structure is constructed such that (i) at least a portion of light of a first spectral wavelength range that enters and passes through a solar cell above the graded-index reflector structure is reflected back into the solar subcell by the graded-index reflector structure; and (ii) at least a portion of light of a second spectral wavelength range that enters and passes through the solar cell above the graded-index reflector structure is transmitted through the graded-index reflector structure to layers disposed beneath the graded-index reflector structure. The second spectral wavelength range is composed of greater wavelengths than the wavelengths of the first spectral wavelength range.