Quantum dot-based organic-inorganic hybrid materials for optoelectronic applications (Conference Presentation)

Kwang-Sup Lee

doi:10.1117/12.2242138

5 December 2016 Quantum dot-based organic-inorganic hybrid materials for optoelectronic applications (Conference Presentation)

Kwang-Sup Lee

Author Affiliations +

Proceedings Volume 9994, Optical Materials and Biomaterials in Security and Defence Systems Technology XIII; 99940H (2016) https://doi.org/10.1117/12.2242138
Event: SPIE Security + Defence, 2016, Edinburgh, United Kingdom

Abstract

Our recent research involves the design, characterization and testing of devices constituting low bandgap conjugated polymers, surface-engineered quantum dots (QDs), carbon nanotube (CNT)-QDs, QDs decorated nanowires, and QD coupled conjugated polymers. The resulting hybrid materials can be used for facilitating the charge/energy transfer and enhancing the charge carrier mobility in highly efficient optoelectronic and photonic devices. Exploiting the full potential of quantum dots (QDs) in optoelectronic devices require efficient mechanisms for transfer of energy or electrons produced in the optically excited QDs. We propose semiconducting π-conjugated molecules as ligands to achieve energy or charge transfer. The hybridization of p-type π-conjugated molecules to the surface of n-type QDs can induce distinct luminescence and charge transport characteristics due to energy and/or charge transfer effects. QDs and π-conjugated molecule hybrids with controlled luminescent properties can be used for new active materials for light-emitting diodes and flexible displays. In addition, such hybrid systems with enhanced charge transfer efficiency can be used for nanoscale photovoltaic devices. We have also explored single nanoparticle based electronics using QDs and π-conjugated molecule hybrids with molecular-scale n–p or n-insulating (ins)–p-heterojunction structures.

Conference Presentation

View presentation recording on the SPIE Digital Library: http://dx.doi.org/10.1117/12.2242138.5229530543001

Citation Download Citation

Kwang-Sup Lee "Quantum dot-based organic-inorganic hybrid materials for optoelectronic applications (Conference Presentation)", Proc. SPIE 9994, Optical Materials and Biomaterials in Security and Defence Systems Technology XIII, 99940H (5 December 2016); https://doi.org/10.1117/12.2242138

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KEYWORDS

Molecules

Optoelectronics

Solar energy

Quantum dots

Molecular electronics

Organic hybrid materials

Polymers

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