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Title: X-ray fluorescence at nanoscale resolution for multicomponent layered structures: A solar cell case study

Journal Article · · Journal of Synchrotron Radiation (Online)
 [1];  [1];  [1];  [1];  [2];  [3];  [2];  [2];  [2];  [1]
  1. Arizona State Univ., Tempe, AZ (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States); Sigray, Concord, CA (United States)

The study of a multilayered and multicomponent system by spatially resolved X-ray fluorescence microscopy poses unique challenges in achieving accurate quantification of elemental distributions. This is particularly true for the quantification of materials with high X-ray attenuation coefficients, depth-dependent composition variations and thickness variations. A widely applicable procedure for use after spectrum fitting and quantification is described. This procedure corrects the elemental distribution from the measured fluorescence signal, taking into account attenuation of the incident beam and generated fluorescence from multiple layers, and accounts for sample thickness variations. Deriving from Beer–Lambert's law, formulae are presented in a general integral form and numerically applicable framework. Here, the procedure is applied using experimental data from a solar cell with a Cu(In,Ga)Se2 absorber layer, measured at two separate synchrotron beamlines with varied measurement geometries. This example shows the importance of these corrections in real material systems, which can change the interpretation of the measured distributions dramatically.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1371555
Journal Information:
Journal of Synchrotron Radiation (Online), Vol. 24, Issue 1; ISSN 1600-5775
Publisher:
International Union of CrystallographyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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Cited By (8)

The Relationship between Chemical Flexibility and Nanoscale Charge Collection in Hybrid Halide Perovskites journal March 2018
Imaging and Mapping Characterization Tools for Perovskite Solar Cells journal July 2019
X‐Ray Microscopy of Halide Perovskites: Techniques, Applications, and Prospects journal January 2020
Challenges and Opportunities with Highly Brilliant X-ray Sources for multi-Modal in-Situ and Operando Characterization of Solar Cells journal August 2018
Quantitative Analysis and Band Gap Determination for CIGS Absorber Layers Using Surface Techniques journal October 2018
Defect activation and annihilation in CIGS solar cells: an operando X-ray microscopy study text January 2020
Defect activation and annihilation in CIGS solar cells: an operando x-ray microscopy study journal February 2020
Challenges and Opportunities with Highly Brilliant X-ray Sources for multi-Modal in-Situ and Operando Characterization of Solar Cells text January 2018