Colloidal quantum dot active layers for light emitting diodes

被引:6
作者
Pagan, Jennifer G. [1 ]
Stokes, Edward B.
Patel, Kinnari
Burkhart, Casey C.
Ahrens, Michael T.
Barletta, Philip T.
O'Steen, Mark
机构
[1] Dot Metr Technol, Charlotte, NC 28223 USA
[2] Univ N Carolina, Charlotte, NC 28223 USA
[3] Univ N Carolina, Ctr Optoelect & Opt Commun, Charlotte Res Inst, Charlotte, NC 28223 USA
[4] Veeco Compound Semicond Inc, St Paul, MN 55127 USA
关键词
LED; quantum dot; CdSe; heterostructure;
D O I
10.1016/j.sse.2006.06.009
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper the preliminary results of incorporating a novel active layer into a GaN light emitting diode (LED) are discussed. Integration of colloidal Use quantum dots into a GaN LED active layer is demonstrated. Properties of p-type Mg doped overgrowth GaN are examined via circular transmission line method (CTLM). Effects on surface roughness due to the active layer incorporation are examined using atomic force microscopy (AFM). Electroluminescence of LED test structures is reported, and an ideality factor of n = 1.6 is demonstrated. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1461 / 1465
页数:5
相关论文
共 11 条
[1]   Semiconductor clusters, nanocrystals, and quantum dots [J].
Alivisatos, AP .
SCIENCE, 1996, 271 (5251) :933-937
[2]  
ARAKAWA Y, 1982, APPL PHYS LETT, V40, P11
[3]  
ASADA M, 1986, J IEEE QUANTUM ELECT, V22, P9
[4]   Efficient p-type doping of GaN films by plasma-assisted molecular beam epitaxy [J].
Bhattacharyya, A ;
Li, W ;
Cabalu, J ;
Moustakas, TD ;
Smith, DJ ;
Hervig, RL .
APPLIED PHYSICS LETTERS, 2004, 85 (21) :4956-4958
[5]  
CAO XA, 2002, IEEE ELEC DEV LETT, V23
[6]   Application of modified transmission line model to measure p-type GaN contact [J].
Chen, NC ;
Tseng, CY ;
Chiu, AP ;
Shih, CF ;
Chang, PH .
APPLIED PHYSICS LETTERS, 2004, 85 (25) :6086-6088
[7]   The role of growth conditions on the p-doping of GaN by plasma-assisted molecular beam epitaxy [J].
Haus, E ;
Smorchkova, IP ;
Heying, B ;
Fini, P ;
Poblenz, C ;
Mates, T ;
Mishra, UK ;
Speck, JS .
JOURNAL OF CRYSTAL GROWTH, 2002, 246 (1-2) :55-63
[8]   Multicolor light-emitting diodes based on semiconductor nanocrystals encapsulated in GaN charge injection layers [J].
Mueller, AH ;
Petruska, MA ;
Achermann, M ;
Werder, DJ ;
Akhadov, EA ;
Koleske, DD ;
Hoffbauer, MA ;
Klimov, VI .
NANO LETTERS, 2005, 5 (06) :1039-1044
[9]   Origin of luminescence from InGaN diodes [J].
O'Donnell, KP ;
Martin, RW ;
Middleton, PG .
PHYSICAL REVIEW LETTERS, 1999, 82 (01) :237-240
[10]   CARRIER GENERATION AND RECOMBINATION IN P-N JUNCTIONS AND P-N JUNCTION CHARACTERISTICS [J].
SAH, CT ;
NOYCE, RN ;
SHOCKLEY, W .
PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1957, 45 (09) :1228-1243