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Molecular Engineering of Silicon Phthalocyanine to Improve the Charge Transport and Ammonia Sensing Properties of Organic Heterojunction Gas Sensors by Sujithkumar Ganesh Moorthy; Benjamin King; Abhishek Kumar; Eric Lesniewska; Benoît H. Lessard; Marcel Bouvet is a Engineering article available to read on EtoBox.
What is Molecular Engineering of Silicon Phthalocyanine to Improve the Charge Transport and Ammonia Sensing Properties of Organic Heterojunction Gas Sensors about?
## Abstract Novel organic heterostructures fabricated with a bilayer consisting of an axially substituted silicon phthalocyanine (R~2~‐SiPc) derivative and lutetium bis‐phthalocyanine (LuPc~2~) are investigated for their ammonia sensing properties. Surface and microstructure characterization of the heterostructure films reveal either compact or highly porous surface topography in (345F)~2~‐SiPc and Cl~2~‐SiPc‐based heterostructures, while electrical characterization reveals a strong influence of the axial substituent in R~2~‐SiPc on NH~3~ sensing capabilities. Electrical characterization further demonstrates an apparent energy barrier for interfacial charge transport, which is higher in the (345F)~2~‐SiPc/LuPc~2~ heterojunction device. In‐depth charge transport studies by impedance spectroscopy further reveal a resistive interface in (345F)~2~‐SiPc/LuPc~2~ and faster bulk and interfacial charge transport in Cl~2~‐SiPc/LuPc~2~ heterojunction devices. Different interfacial charge transport capabilities and surface topographies affect NH~3~ sensing properties of the two heterojunction devices, in which (345F)~2~‐SiPc/LuPc~2~ reveals a fast and non‐linear response with a limit of detec
Who reads Molecular Engineering of Silicon Phthalocyanine to Improve the Charge Transport and Ammonia Sensing Properties of Organic Heterojunction Gas Sensors?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Sujithkumar Ganesh Moorthy; Benjamin King; Abhishek Kumar; Eric Lesniewska; Benoît H. Lessard; Marcel Bouvet
- Publisher
- Wiley
- Published
- 2022
- Language
- EN
- Field
- Engineering (Physical Sciences)