Development of a large area inverted metamorphic multi-junction (IMM) highly efficient AM0 solar cell

Author

Cornfeld, Arthur B. ; Stan, Mark ; Varghese, Tansen ; Diaz, Jacqueline ; Ley, A. Vance ; Cho, Benjamin ; Korostyshevsky, Aaron ; Aiken, Daniel J. ; Sharps, Paul R.

Author_Institution

Emcore Photovoltaics, 10420 Research Rd. SE, Albuquerque, NM 87123 USA

fYear

2008

fDate

11-16 May 2008

Firstpage

1

Lastpage

5

Abstract

We have identified the inverted metamorphic multi-junction (IMM) structure as the best vehicle to achieve increased solar cell efficiency. In this paper, advantages of this approach are listed, challenges are discussed, and results for component and integrated sub-cells are presented. The inverted dual junction lattice matched (IDJLM) cell demonstrated an AM0 Voc and efficiency of 2.451 V and 26.4%, respectively. A 1.0 eV filtered inverted metamorphic (IM) cell exhibited an AM0 Voc and efficiency of 0.505 V and 6.0%, respectively. The component cells were combined into a 3J-IMM 2cm × 2cm cell exhibiting an AM0 (135.3 mW/cm²) efficiency of 32.0±1%. A 26.3 cm² cell achieved ≫30% AM0 efficiency

Keywords

Chemicals; Epitaxial growth; Glass; Joining processes; Lattices; Photonic band gap; Photovoltaic cells; Solvents; Substrates; Thermal loading;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference, 2008. PVSC '08. 33rd IEEE

Conference_Location

San Diego, CA, USA

ISSN

0160-8371

Print_ISBN

978-1-4244-1640-0

Electronic_ISBN

0160-8371

Type

conf

DOI

10.1109/PVSC.2008.4922610

Filename

4922610