LONGESST

Low Cost Germanium Substrates for Next Generation 4-Junction Space Solar Cells Utilising Dilute Nitride Technology

Coordinatore	IQE plc    more  Organization address address: PASCAL CLOSE ST MELLONS city: Cardiff postcode: CF3 0EG contact info Titolo: Dr Nome: Iwan Cognome: Davies
Nazionalità Coordinatore	United Kingdom [UK]
Totale costo	4˙044˙315 €
EC contributo	2˙498˙366 €
Programma	FP7-SPACE Specific Programme "Cooperation": Space
Code Call	FP7-SPACE-2013-1
Funding Scheme	CP-FP
Anno di inizio	2014
Periodo (anno-mese-giorno)	2014-07-23   -   2017-02-01

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	IQE plc  Organization address address: PASCAL CLOSE ST MELLONS city: Cardiff postcode: CF3 0EG contact info Titolo: Dr Nome: Iwan Cognome: Davies	UK (Cardiff)	coordinator	738˙767.00
2	UNIVERSIDAD POLITECNICA DE MADRID  Organization address address: Calle Ramiro de Maeztu 7 city: MADRID postcode: 28040 contact info Titolo: Prof Nome: Roberto Cognome: Prieto	ES (MADRID)	participant	745˙676.00
3	UMICORE  Organization address address: RUE DU MARAIS 31 city: BRUXELLES postcode: 1000 contact info Titolo: Dr Nome: Kristof Cognome: Dessein	BE (BRUXELLES)	participant	580˙954.00
4	COMPOUND SEMICONDUCTOR TECHNOLOGIES GLOBAL LIMITED  Organization address address: "Block 6, West of Scotland Science Park, Maryhill Road" city: Glasgow postcode: G20 0SP contact info Titolo: Dr Nome: Wyn Cognome: Meredith	UK (Glasgow)	participant	432˙969.00

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 Obiettivo del progetto (Objective)

'Multi-junction solar cell technology, based on III-V semiconductor structures grown onto Germanium substrates, is well established as the primary photovoltaic technology used in satellite power generation. As future satellite power requirements will significantly increase due to the adoption of technologies such as electrical propulsion, sensing and telecommunications, next generation space solar cells will be required to significantly increase their conversion efficiency to enable higher energy generation with minimal increase in overall system weight and cost. To this end, this proposal will develop multi-junction space solar cells on high quality, low cost, large area (150mm diameter) Germanium substrates, which will have conversion efficiencies >33% (AM0), utilising novel 4-Junction architectures. The process will adopt dilute nitride epitaxial technology that has been developed by Nanyang Technological University (1). To enable this, a powerful consortium has been assembled, which covers the entire skill set required to produce such cells, including substrate manufacture, advanced epitaxy, device design, device fabrication, test and qualification.

(1). Molecular beam epitaxy grown GaNAsSb 1 eV photovoltaic cell, K.H. Tan, S. Wicaksono, W.K. Loke, D. Li, S.F. Yoon, E.A. Fitzgerald, S.A. Ringel, J.S. Harris Jr, Journal of Crystal Growth 335, pp66-69, 2011.

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