Temperature effects in the sputtering of a molecular solid by energetic atomic and cluster projectiles
D A Brenes1, D Willingham1, N Winograd1
1Department of Chemistry, Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, USA.
Surface and Interface Analysis : SIA
|December 19, 2013
Summary
Investigating temperature effects on coronene sputtering revealed significant changes in sputtered species. Higher temperatures altered kinetic energy and fragmentation patterns of organic molecules during ion bombardment.
Area of Science:
- Surface Science
- Physical Chemistry
- Materials Science
Background:
- Understanding sputtering mechanisms is crucial for thin film deposition and surface modification.
- Organic molecules present unique challenges in sputtering due to their complex structures and potential for fragmentation.
Purpose of the Study:
- To investigate the influence of temperature on the sputtering yield and characteristics of coronene.
- To analyze the kinetic energy and fragmentation of sputtered neutral coronene species as a function of temperature.
Main Methods:
- A well-defined coronene film was subjected to Au1 and C60 primary ion bombardment at 100 K and 300 K.
- Strong field photoionization was used to detect and analyze the sputtered neutral flux.
- Time-of-flight measurements monitored the kinetic energy distributions of intact and fragmented species.
Main Results:
- Temperature significantly affects the sputtering process of coronene.
- Differences in kinetic energy distributions and fragmentation patterns were observed between 100 K and 300 K.
- The study provides insights into the temperature-dependent behavior of organic molecule sputtering.
Conclusions:
- Temperature plays a critical role in the sputtering dynamics of organic materials like coronene.
- The findings contribute to a better understanding of ion-solid interactions with complex organic molecules.
- This research has implications for optimizing sputtering processes in organic electronics and materials science.
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