Spectral responsivity measurements of monolithic GaInP2/InGaAs/Ge triple-junction solar cells

Haifeng Meng; Hongdong Yang; Junchao Zhang; Yingwei He; Bifeng Zhang; Chuan Cai; Shuai Man; Limin Xiong

doi:10.1117/12.2538252

18 November 2019 Spectral responsivity measurements of monolithic GaInP₂/InGaAs/Ge triple-junction solar cells

Haifeng Meng, Hongdong Yang, Junchao Zhang, Yingwei He, Bifeng Zhang, Chuan Cai, Shuai Man, Limin Xiong

Proceedings Volume 11189, Optical Metrology and Inspection for Industrial Applications VI; 111891T (2019) https://doi.org/10.1117/12.2538252
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

GaInP₂/InGaAs/Ge triple-junction solar cells have become the main energy source for space on-orbit applications. For the sake of the three composed sub-cells, including GaInP2, InGaAs and Ge sub-cell, the monolithic triple-junction solar cells can make use of solar irradiance in the wavelength range of 300 nm to 1800 nm. Before assembled into space solar arrays, each solar cell’s current-voltage curves should be measured in laboratories on earth by AM0 solar simulators, to know their key parameters especially short circuit current. Solar cell’s current-matching is crucial for assembling into arrays. While spectral responsivity is essential for spectral mismatch factors (MMFs) calculation during the current-voltage measurement. MMF corresponding to each sub-cell should be analyzed, so spectral responsivity of each sub-cell of monolithic solar cell was required to be measured out. But sub-cells are connected in series in a monolithic multijunction solar cell, and current-limiting effect makes traditional spectral responsivity measurement which is suitable for single-junction solar cells not applicable anymore. For measuring the spectral responsivity of monolithic multi-junction solar cells, optimized bias light and bias voltage are required to make the tested target sub-cell be the current-limiting one. The wavelength range and irradiance intensity of the bias light, the direction and value of the bias voltage, should be chose and adjusted appropriately during the measurement, otherwise will lead to measurement artifacts and obtain incorrect results. In this paper, combing optimization of bias light and bias voltage with monochromatic light system, we would present method and detailed procedures for measuring the spectral responsivity of monolithic GaInP₂/InGaAs/Ge triple-junction space solar cells.

Citation Download Citation

Haifeng Meng, Hongdong Yang, Junchao Zhang, Yingwei He, Bifeng Zhang, Chuan Cai, Shuai Man, and Limin Xiong "Spectral responsivity measurements of monolithic GaInP₂/InGaAs/Ge triple-junction solar cells", Proc. SPIE 11189, Optical Metrology and Inspection for Industrial Applications VI, 111891T (18 November 2019); https://doi.org/10.1117/12.2538252

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Solar cells

Indium gallium phosphide

Germanium

Calibration

Indium gallium arsenide

Standards development

Light emitting diodes

Show All Keywords

Keywords/Phrases

Search In:

Publication Years