Abstract
Amorphous silicon quantum dots (a-Si QDs), which show a quantum confinement effect, were grown in a silicon nitride film by plasma enhanced chemical vapor deposition. Red, green, blue, and white photoluminescence were observed from the a-Si QD structures by controlling the dot size. An orange light-emitting device (LED) was fabricated using a-Si QDs with a mean size of 2.0 nm. The turn-on voltage was less than 5 V. An external quantum efficiency of 2×10-3 % was also demonstrated. These results show that an LED using a-Si QDs embedded in the silicon nitride film is superior in terms of electrical and optical properties to other Si-based LEDs.
Original language | English |
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Pages (from-to) | F1361-F1366 |
Journal | Materials Research Society Symposium - Proceedings |
Volume | 638 |
Publication status | Published - 2001 |
Externally published | Yes |
Event | Microcrystalline and Nanocrystalline Semiconductors 2000 - Boston, MA, United States Duration: 2000 Nov 27 → 2000 Nov 30 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering