Mr. Michael G. Helander Profile

Michael G. Helander

Ph.D Candidate at Univ of Toronto

SPIE Involvement:

Author

Publications (8)

Proceedings Article | 13 September 2012 Paper

Boosting the performance of red PHOLEDs by exciton harvesting

Y.-L. Chang, Z. Wang, M. Helander, J. Qiu, Z. Lu

Proceedings Volume 8476, 84761Q (2012) https://doi.org/10.1117/12.930224

KEYWORDS: Phosphorescent organic light-emitting diodes, Excitons, Doping, External quantum efficiency, Organic light emitting diodes, Energy transfer, Absorption, General lighting, Electroluminescence, Cell phones

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Proceedings Article | 13 September 2012 Paper

Considerations in device design and materials selection in organic light emitting diodes

Z. Wang, M. Helander, J. Qiu, Y. Chang, L. Chai, D. Puzzo, Z. Hudson, S. Wang, Z. Lu

Proceedings Volume 8476, 84760E (2012) https://doi.org/10.1117/12.928187

KEYWORDS: Organic light emitting diodes, External quantum efficiency, Electroluminescence, Lutetium, Heterojunctions, Excitons, Electron transport, Crystals, Molecules, Phosphorescence

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Proceedings Article | 13 September 2012 Paper

In situ lifetime testing of organic light emitting diodes

C. Merkel, M. Helander, J. Qiu, Z. H. Lu

Proceedings Volume 8476, 847622 (2012) https://doi.org/10.1117/12.929978

KEYWORDS: Organic light emitting diodes, Photodiodes, Temperature metrology, Data acquisition, Glasses, Software development, Control systems, Oxygen, Amplifiers, Photography

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Proceedings Article | 13 September 2012 Paper

High-efficiency non-blocking phosphorescent organic light emitting diode with ultrathin emission layer

Jacky Qiu, Michael Helander, Zhibin Wang, Yi-Lu Chang, ZhengHong Lu

Proceedings Volume 8476, 84761S (2012) https://doi.org/10.1117/12.929976

KEYWORDS: Electroluminescence, Organic light emitting diodes, Doping, Excitons, Platinum, External quantum efficiency, Applied physics, Lutetium, Materials science, Manufacturing

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Proceedings Article | 4 May 2010 Paper

Hybrid infrared optical upconversion devices with a built-in electrical gain

Jun Chen, Dayan Ban, Michael Helander, Zhenghong Lu, P. Poole, H. C. Liu

Proceedings Volume 7660, 76600P (2010) https://doi.org/10.1117/12.850279

KEYWORDS: Organic light emitting diodes, Upconversion, Metals, Infrared radiation, Near infrared, Photodetectors, Visible radiation, Hybrid optics, Mirrors, Heterojunctions

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Proceedings Article | 27 August 2009 Paper

Band alignment at electrode-organic interfaces

M. Helander, Z. Wang, M. Greiner, J. Qiu, Z. Lu

Proceedings Volume 7415, 74151U (2009) https://doi.org/10.1117/12.826671

KEYWORDS: Interfaces, Metals, Gold, Oxides, Semiconductors, Dielectrics, Magnesium, Electrodes, Organic semiconductors, Natural surfaces

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Proceedings Article | 5 August 2009 Paper

Infrared organic/inorganic optical upconverting devices

Dayan Ban, Jun Chen, Michael Helander, Zhenghong Lu, Marcel Graf, Anthony SpringThorpe, P. Poole, H. Liu

Proceedings Volume 7383, 738302 (2009) https://doi.org/10.1117/12.835658

KEYWORDS: Organic light emitting diodes, Upconversion, Near infrared, Metals, Mirrors, Infrared radiation, Photodetectors, Visible radiation, Sensors, Semiconductors

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Proceedings Article | 2 September 2008 Paper

Metal/fullerene electrode structure: physics and device applications

M. Helander, Z. Wang, Z. Lu

Proceedings Volume 7051, 70510Z (2008) https://doi.org/10.1117/12.796712

KEYWORDS: Metals, Gold, Organic light emitting diodes, Magnesium, Interfaces, Organic semiconductors, Organic electronics, Electroluminescence, Indium, Tin

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Showing 5 of 8 publications

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