Why can’t I measure the external quantum efficiency of the Ge subcell of my multijunction solar cell? | Zendy

Enrique Barrigón | Zendy; Pilar EspinetGonzález | Zendy; Yedileth Contreras | Zendy; Ignacio ReyStolle | Zendy

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Why can’t I measure the external quantum efficiency of the Ge subcell of my multijunction solar cell?

Author(s) -

Enrique Barrigón,

Pilar EspinetGonzález,

Yedileth Contreras,

Ignacio ReyStolle

Publication year - 2015

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4931523

Subject(s) - quantum efficiency , optoelectronics , materials science , solar cell , triple junction , band gap , solar cell efficiency , measure (data warehouse) , computer science , database

The measurement of the external quantum efficiency (EQE) of low bandgap subcells in a multijunction solar cell can be sometimes problematic. In particular, this paper describes a set of cases where the EQE of a Ge subcell in a conventional GaInP/GaInAs/Ge triple-junction solar cell cannot be fully measured. We describe the way to identify each case by tracing the I-V curve under the same light-bias conditions applied for the EQE measurement, together with the strategies that could be implemented to attain the best possible measurement of the EQE of the Ge subcell.

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