Javad Ghasemi, Md. Mottaleb Hossain, Prof. Payman Zarkesh-Ha, Prof. Steven Brueck, and Prof. Majeed Hayat
University of New Mexico
Relevant Research / Products
Design, Fabrication, and Characterization of a CMOS-
Compatible Plasmonic Photodetector
�� ProjectProject goalsgoals::
� Design and fabrication of a novel readout
circuit (ROIC)
� CMOS-compatible PD array is used to be
cost effective
� Incorporates nano-plasmonic technologyfor the sensing capability
� Avalanche photodiode (APD) structuresemployed to have more gain
�� ApplicationsApplications:
� Ultra-narrowband color sensor
� Direction detection
� Visible light communication
� Adaptive lighting systems
Project Overview
Project Code(S2.1.5)
Future work
� An interface electronic circuit is needed
� Utilize the new detector for light
intensity, color, and angle detection
� Narrowband optical filter using plasmonic
detector with spectral resolution of 20 nm
� Avalanche enhancement of at least 50
�� Publications:Publications:
� Lee, S.C., Krishna, S.; Brueck, S.R.J. "Plasmonic-
Enhanced Photodetectors for Focal Plane Arrays",
Photonics Technology Letters, IEEE, July15, 2011,
Volume: 23 , Issue: 14, Pp: 935- 937
�� ProductsProducts
Research Results
Spectral
sensitivity
TCS3200
from
AMS/TAOS
Not
sensitivity
enough
Directional
sensitivity
Currently, no commercial optical
angle sensor in the market
Distance
measurement
GP2Y0A700K0F
from SHARP
Microelec.
Do not
measure
angular
distance
Light Intensity
sensor
MAX44009
from MAXIM
No color or
angle
detection
CMOS PDs with Different
sizes, every other covered
with Plasmonic structure
� Above is the wafer with shallow junction
photodetectors fabricated at MTTC - UNM.
� Nanoparticle plasmonic structures fabricated atProf. Brueck’s lab
� PN junction is shallow to be more compatible
with plasmonic structure on the top
Project’s ERC Role
Societal Benefits
Acknowledgements
The authors acknowledge the help of Alexander Neumann inplasmonic structure design and David Murrell, in configuring thecharacterization setup.
This work is supported by the NSF under grant No. EEC-0812056. Any opinions, findings, and conclusions orrecommendations expressed in this material are those of the
author(s) and do not necessarily reflect the views of the NationalScience Foundation.
Monitor spectrum of light to provide more
healthy light to the persons in the room for
the conditions e.g., time of day� Frequent analysis of the spectrum of
light in the workplace or home
� Verify against approved health guidelines
for lighting
� Avalanche enhancement of at least 50
� Integrate the new plasmonic/avalanche
detector into a commercial smart space
Light Flow ModelingHuman Factors &
Interfaces
Adaptive Sampling &
Control Modeling
Communications
Testbed
-Lighting Industries
-Health Care Industries
-Communications
Industries
-Prototypes
-Design Standards
-Integration Protocols
STAKEHOLDERS
Advanced Luminaires Biochemical SensorsCommunication
Transceiver & Protocol
Efficient Full
Spectrum Lighting
Display
Illumination Fusion
Healthy
RoomData Room
BARRIERS
- System Cost
- Lighting Designer acceptance
- Light/RF Wireless standards
integration
- Clinical Impacts
BARRIERS
- Color and intensity uniformity
maintenance
- Stray light impact on sensor SNR
- Lack of source/sensor
communications protocols
-Biochem-identification &
discrimination
Biochemical Sensing
Testbed
Adaptive Lighting
Testbed
Communications
Testbed
BARRIERS
- Inefficient LEDs (except Blue)
- Limited bandwidth of sources
- Lack of color discriminating
sensors
- Lack of monolithic optoelectronic
integration
Technology Integration
Technology Base
Opto Electronic
Device Design
Nano LED
Technology
Photonic Crystal
Optics
Color-selective High
Speed Sensors
III-Nitride EpitaxyHigh Efficiency
PhosphorsPlasmonic Structures
Knowledge Base
Level 3: Systems
Level 2: Enabling Technologies
Level 1: Fundamental Knowledge
SY
ST
EM
R
EQ
UIR
EM
EN
TS
Technology Elements
Fundamental Insights
System
Performance
Feedback
Subsystems &
Protocols
Performance
Feedback
Materials &
Devices
Products & Outcomes Requirements
�� InteractionsInteractions withwith otherother ERCERC projectsprojects::
� S2.1.1 Light sensors with integrated
communications
� S2.1.4 Design and modeling of CMOS
compatible APDs and plasmonic detectors
� T1.2.5 Improving building energyefficiency through VLC control interface
Health, Safety, and WellHealth, Safety, and Well--beingbeing
Increased ProductivityIncreased Productivity
� Healthy lighting, both in terms of
spectrum and intensity, can increase
individuals’ productivity� Outdoor lighting conditions can be
mimicked in the office regardless of
weather condition
� Picture above is SEM images of the plasmonic
structure over the photodetectors
� Picture above shows the IV curves of a
plasmonic photodiode with various light
wavelengths
� Complete spectral response measurement is
currently underway
� Still few issues in the process
� Need to optimize the fabrication of the
plasmonic devices