Journal article
Bandlike Transport in Strongly Coupled and Doped Quantum Dot Solids: A Route to High-Performance Thin-Film Electronics
Nano letters, v 12(5), pp 2631-2638
09 May 2012
PMID: 22509936
Abstract
We report bandlike transport in solution-deposited, CdSe QD thin-films with room temperature field-effect mobilities for electrons of 27 cm(2)/(V s). A concomitant shift and broadening in the QD solid optical absorption compared to that of dispersed samples is consistent with electron delocalization and measured electron mobilities. Annealing indium contacts allows for thermal diffusion and doping of the QD thin-films, shifting the Fermi energy, filling traps, and providing access to the bands. Temperature-dependent measurements show bandlike transport to 220 K on a SiO2 gate insulator that is extended to 140 K by reducing the interface trap density using an Al2O3/SiO2 gate insulator. The use of compact ligands and doping provides a pathway to high performance, solution-deposited QD electronics and optoelectronics.
Metrics
Details
- Title
- Bandlike Transport in Strongly Coupled and Doped Quantum Dot Solids: A Route to High-Performance Thin-Film Electronics
- Creators
- Ji-Hyuk Choi - Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USAAaron T. Fafarman - Univ Penn, Dept Elect & Syst Engn, Philadelphia, PA 19104 USASoong Ju Oh - Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USADong-Kyun Ko - Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USADavid K. Kim - Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USABenjamin T. Diroll - Univ Penn, Dept Chem, Philadelphia, PA 19104 USAShin Muramoto - National Institute of Standards and TechnologyJ. Greg Gillen - National Institute of Standards and TechnologyChristopher B. Murray - Univ Penn, Dept Elect & Syst Engn, Philadelphia, PA 19104 USACherie R. Kagan - Univ Penn, Dept Elect & Syst Engn, Philadelphia, PA 19104 USA
- Publication Details
- Nano letters, v 12(5), pp 2631-2638
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 8
- Grant note
- CBET-0854226 / NSF-CBET; National Science Foundation (NSF) 0854226 / Div Of Chem, Bioeng, Env, & Transp Sys; National Science Foundation (NSF); NSF - Directorate for Engineering (ENG) DMR11-20901 / NSF MRSEC; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) Northrop Grumann DMR11-20901; DMS-0935165 / NSF; National Science Foundation (NSF) DE-SC0002158 / U.S. Department of Energy Office of Basic Energy Sciences, Division of Materials Science and Engineering; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000303696400079
- Scopus ID
- 2-s2.0-84861082353
- Other Identifier
- 991020834417204721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter