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Tuning ZnO’s workfunction with molecular monolayers Reuben T. Collins, Colorado School of Mines, DMR 0907409. Vacuum level. Vacuum level. - PowerPoint PPT Presentation
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Tuning ZnO’s workfunction with molecular monolayers
Reuben T. Collins, Colorado School of Mines, DMR 0907409
By carefully exploring several families of dipole forming molecular monolayers, we have demonstrated the ability to shift the ZnO work function by as much as 700 mV. The work function influences chemical bonding and charge transfer at the ZnO surface. This has significance for technologies extending from organic solar cells and organic light emitting diodes to organic electronics and hybrid sensors.
Vacuum level 0.00
eV
4.25
4.50
4.75
5.00
ODT
TMPS
NDA
PTES
OTES
4CPTES4CPTES
TMPS
Molecular dipoles at the organic/ZnO interface shift the ZnO workfunction
Vacuum level
K-12 Outreach Targeting Teachers and Diversity
Reuben T. Collins, Colorado School of Mines, DMR 0907409
Hands-on educational modules targeting fundamental science concepts have been developed around the theme of solar thermal energy. Activities suitable from kindergarten to high school students are part of the series. The faculty, graduate student, and undergraduate team presented these materials to many groups including a K-12 minority engineering program summer school, outreach workshop for K-5 teachers, and a program for community college teachers.
Reuben Collins discusses phase transitions and sublimation of dry ice with a kindergarten teacher
Graduate student Thomas Brenner presenting a solar thermal demonstration to community college teachers
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