Incorporation of spatially-resolved current density measurements with photoluminescence for advanced parameter imaging of solar cells

Hossain, Mohammad Jobayer; Schneller, Eric J.; Li, Mengjie; Davis, Kristopher O.

doi:10.1016/j.solmat.2019.04.012

Title: Incorporation of spatially-resolved current density measurements with photoluminescence for advanced parameter imaging of solar cells

Journal Article · Wed May 08 00:00:00 EDT 2019 · Solar Energy Materials and Solar Cells

DOI:https://doi.org/10.1016/j.solmat.2019.04.012· OSTI ID:1613500

Hossain, Mohammad Jobayer ^[1]; Schneller, Eric J. ^[1]; Li, Mengjie ^[1]; Davis, Kristopher O. ^[1]

Univ. of Central Florida, Orlando, FL (United States)

The spatial distribution of device performance parameters of solar cells provides important insight into their operation, including the type and magnitude of conversion losses and potential areas of improvement. In most of the procedures used to create these parameter images, a uniform (i.e., global) short-circuit current density (J_SC) is usually assumed. However, J_SC is known to vary over the surface of a solar cell, especially in polycrystalline absorber materials like multicrystalline silicon. In this work, a high speed quantum efficiency measurement rastered over the surface of a solar cell is used to obtain images of J_SC. These J_SC images are then used to calculate images of series resistance, dark saturation current density, fill factor, and conversion efficiency. Comparisons are made between the images created with a global J_SC and with the spatially-resolved J_SC. Negligible variation is observed in the series resistance and dark saturation current density images, but a drastic change is observed in the efficiency images between these two methods.

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Research Organization:: Univ. of Central Florida, Orlando, FL (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office

Grant/Contract Number:: EE0008155; EE-0008155

OSTI ID:: 1613500

Alternate ID(s):: OSTI ID: 1547429

Journal Information:: Solar Energy Materials and Solar Cells, Vol. 199; ISSN 0927-0248

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 5 works

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References (19)

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