scholarly journals Visualizing the role of photoinduced ion migration on photoluminescence in halide perovskite grains

2020 ◽  
Vol 8 (22) ◽  
pp. 7509-7518
Author(s):  
Hoyeon Choi ◽  
Jack Chun-Ren Ke ◽  
Stefan Skalsky ◽  
Christopher A. Castle ◽  
Kexue Li ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Ion Migration ◽  
Carrier Recombination ◽  
Recombination Processes ◽  
Halide Perovskite ◽  
Resolution Mass

By combining in situ optical spectroscopy with a high spatial resolution mass spectrometry, we directly link the evolution in carrier recombination processes in perovskite films to light-induced ion migration.

scholarly journals Triple Oxygen Isotope Measurements by Multi-Collector Secondary Ion Mass Spectrometry

2021 ◽  
Vol 8 ◽  
Author(s):  
Nordine Bouden ◽  
Johan Villeneuve ◽  
Yves Marrocchi ◽  
Etienne Deloule ◽  
Evelyn Füri ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Oxygen Isotope ◽  
Spatial Resolution ◽  
Secondary Ion Mass Spectrometry ◽  
Small Radius ◽  
Large Radius ◽  
Ion Mass Spectrometry ◽  
Secondary Ion ◽  
Isotope Measurements

Secondary ion mass spectrometry (SIMS) is a powerful technique for in situ triple oxygen isotope measurements that has been used for more than 30 years. Since pioneering works performed on small-radius ion microprobes in the mid-80s, tremendous progress has been made in terms of analytical precision, spatial resolution and analysis duration. In this respect, the emergence in the mid-90s of the large-radius ion microprobe equipped with a multi-collector system (MC-SIMS) was a game changer. Further developments achieved on CAMECA MC-SIMS since then (e.g., stability of the electronics, enhanced transmission of secondary ions, automatic centering of the secondary ion beam, enhanced control of the magnetic field, 1012Ω resistor for the Faraday cup amplifiers) allow nowadays to routinely measure oxygen isotopic ratios (18O/16O and 17O/16O) in various matrices with a precision (internal error and reproducibility) better than 0.5‰ (2σ), a spatial resolution smaller than 10 µm and in a few minutes per analysis. This paper focuses on the application of the MC-SIMS technique to the in situ monitoring of mass-independent triple oxygen isotope variations.

Accuracy and precision of U–Pb zircon geochronology at high spatial resolution (7–20 μm spots) by laser ablation-ICP-single-collector-sector-field-mass spectrometry

2019 ◽  
Vol 34 (1) ◽  
pp. 180-192 ◽  
Author(s):  
Pulok K. Mukherjee ◽  
A. Kate Souders ◽  
Paul J. Sylvester
Keyword(s):  
Mass Spectrometry ◽  
Laser Ablation ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Zircon Geochronology ◽  
Field Mass ◽  
Accuracy And Precision ◽  
Sector Field Mass Spectrometry

U–Pb zircon ages for 7, 10, 15 and 20 μm spots by laser ablation-ICP-single-collector-sector-field-mass spectrometry using short (∼50 pulse) integrations.

Sign in / Sign up

Export Citation Format

Share Document