PMID- 21865628
OWN - NLM
STAT- MEDLINE
DCOM- 20111221
LR  - 20110831
IS  - 1361-6528 (Electronic)
IS  - 0957-4484 (Linking)
VI  - 22
IP  - 38
DP  - 2011 Sep 23
TI  - p-n homo-junction arrays of aligned single walled carbon nanotubes fabricated by 
      selective patterning of polyethyleneimine film.
PG  - 385302
LID - 10.1088/0957-4484/22/38/385302 [doi]
AB  - We describe the fabrication and electrical performance of p-n homo-junction diode 
      arrays of horizontally aligned single walled carbon nanotubes (SWCNTs). 
      Horizontally aligned SWCNTs grown on stable temperature-cut quartz with a density 
      of  approximately  6 SWCNTs microm(-1) were transferred onto a SiO(2)/Si substrate. After the 
      electrical breakdown, aligned SWCNT field effect transistors (FETs) showed 
      unipolar p-type characteristics with a large current on/off ratio of 10(6) at 1 V 
      and a hole mobility per tube of 1500 cm(2) V(-1) s(-1). Spin-coating of 
      polyethyleneimine (PEI) onto p-type SWCNT FETs showed the n-type transfer 
      characteristics. Patterning of spin-coated PEI film enabled the fabrication of 
      p-n homo-junction arrays of aligned SWCNTs in an easy way, where the rectifying 
      behavior was observed with a rectification ratio of  approximately  10(4) at +/- 2 V. A 
      comparative study with a p-n homo-junction of random networks of SWCNTs confirmed 
      the advantage of aligned SWCNTs for applications in high performance electronic 
      devices.
FAU - Park, Jaehyun
AU  - Park J
AD  - Department of Chemical and Biological Engineering, Korea University, Seoul, 
      Korea.
FAU - Yoon, Jangyeol
AU  - Yoon J
FAU - Kim, Gyu-Tae
AU  - Kim GT
FAU - Ha, Jeong Sook
AU  - Ha JS
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20110825
PL  - England
TA  - Nanotechnology
JT  - Nanotechnology
JID - 101241272
RN  - 0 (Nanotubes, Carbon)
RN  - 9002-98-6 (Polyethyleneimine)
SB  - IM
MH  - Nanotechnology/*methods
MH  - Nanotubes, Carbon/chemistry/*ultrastructure
MH  - Polyethyleneimine/*chemistry
MH  - *Transistors, Electronic
EDAT- 2011/08/26 06:00
MHDA- 2011/12/22 06:00
CRDT- 2011/08/26 06:00
PHST- 2011/08/26 06:00 [entrez]
PHST- 2011/08/26 06:00 [pubmed]
PHST- 2011/12/22 06:00 [medline]
AID - S0957-4484(11)98281-6 [pii]
AID - 10.1088/0957-4484/22/38/385302 [doi]
PST - ppublish
SO  - Nanotechnology. 2011 Sep 23;22(38):385302. doi: 10.1088/0957-4484/22/38/385302. 
      Epub 2011 Aug 25.