A Caltech Library Service

Tunable Visible and Near-IR Emission from Sub-10 nm Etched Single-Crystal Si Nanopillars

Walavalkar, Sameer S. and Hofmann, Carrie E. and Homyk, Andrew P. and Henry, M. David and Atwater, Harry A. and Scherer, Axel (2010) Tunable Visible and Near-IR Emission from Sub-10 nm Etched Single-Crystal Si Nanopillars. Nano Letters, 10 (11). pp. 4423-4428. ISSN 1530-6984. doi:10.1021/nl102140k.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


Visible and near-IR photoluminescence (PL) is reported from sub-10 nm silicon nanopillars. Pillars were plasma etched from single crystal Si wafers and thinned by utilizing strain-induced, self-terminating oxidation of cylindrical structures. PL, lifetime, and transmission electron microscopy were performed to measure the dimensions and emission characteristics of the pillars. The peak PL energy was found to blue shift with narrowing pillar diameter in accordance with a quantum confinement effect. The blue shift was quantified using a tight binding method simulation that incorporated the strain induced by the thermal oxidation process. These pillars show promise as possible complementary metal oxide semiconductor compatible silicon devices in the form of light-emitting diode or laser structures.

Item Type:Article
Related URLs:
URLURL TypeDescription DOIArticle
Walavalkar, Sameer S.0000-0002-7628-9600
Henry, M. David0000-0002-5201-0644
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2010 American Chemical Society. Received for review: 06/17/2010. Published on Web: 10/04/2010. S.W. would like to thank Imogen Pryce for her work on an early iteration of this project as well as Professor Tom Tombrello and Ryan Briggs for useful discussion. We would also like to gratefully acknowledge the Boeing Corporation under the CT-BA-GTA-1 grant and DARPA for generous support under the EPIC (HR0011-04-1- 0054) and NACHOS (W911NF-07-1-0277) program. A.H. would like to thank the ARCS program for their support. M.D.H. would like to thank the John and Franny Hertz Foundation for their continued funding.
Funding AgencyGrant Number
Boeing CorporationCT-BA-GTA-1
Defense Advanced Research Projects Agency (DARPA)HR0011-04-1-0054
Defense Advanced Research Projects Agency (DARPA)W911NF-07-1-0277
Fannie and John Hertz FoundationUNSPECIFIED
Subject Keywords:Silicon nanowires; plasma etching; photoluminescence; quantum effects; strain induced behavior
Issue or Number:11
Record Number:CaltechAUTHORS:20101206-110602750
Persistent URL:
Official Citation:Tunable Visible and Near-IR Emission from Sub-10 nm Etched Single-Crystal Si Nanopillars Sameer S. Walavalkar, Carrie E. Hofmann, Andrew P. Homyk, M. David Henry, Harry A. Atwater, Axel Scherer Nano Letters 2010 10 (11), 4423-4428
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21183
Deposited By: Tony Diaz
Deposited On:08 Dec 2010 19:02
Last Modified:09 Nov 2021 00:06

Repository Staff Only: item control page