Angle and polarization dependent characteristics of colloidal quantum dot absorption in fano filters on flexible substrates

Li Chen, Hongjun Yang, Zexuan Qiang, Huiqing Pang, Zhenqiang Ma, Jian Xu, Gail J. Brown, Weidong Zhou

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

We report theoretical and experimental investigations of infrared absorption characteristics for PbSe colloidal quantum dots in defect-free photonic crystal (PC) cavities, via Fano resonances. Angle and polarization independent transmission and absorption are feasible for surface normal incident beams with dispersion engineered modal design. Experimental demonstration was done on patterned single crystalline silicon nanomembranes (SiNMs) transferred on glass and on flexible PET substrates, with PbSe QDs backfilled into the air holes of the patterned SiNMs. These findings enable the design of spectrally selective photodetectors at near infrared regime with the desired angle and polarization properties.

Original languageEnglish (US)
Article number72220V
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume7222
DOIs
StatePublished - Mar 23 2009
EventQuantum Sensing and Nanophotonic Devices VI - San Jose, CA, United States
Duration: Jan 25 2009Jan 28 2009

Fingerprint

Flexible Substrate
Silicon
Quantum Dots
Semiconductor quantum dots
Infrared
Polarization
Absorption
quantum dots
Filter
filters
Angle
Normal Surface
Dependent
Photodetector
Infrared absorption
silicon
Substrates
polarization
Photodetectors
Photonic crystals

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

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abstract = "We report theoretical and experimental investigations of infrared absorption characteristics for PbSe colloidal quantum dots in defect-free photonic crystal (PC) cavities, via Fano resonances. Angle and polarization independent transmission and absorption are feasible for surface normal incident beams with dispersion engineered modal design. Experimental demonstration was done on patterned single crystalline silicon nanomembranes (SiNMs) transferred on glass and on flexible PET substrates, with PbSe QDs backfilled into the air holes of the patterned SiNMs. These findings enable the design of spectrally selective photodetectors at near infrared regime with the desired angle and polarization properties.",
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Angle and polarization dependent characteristics of colloidal quantum dot absorption in fano filters on flexible substrates. / Chen, Li; Yang, Hongjun; Qiang, Zexuan; Pang, Huiqing; Ma, Zhenqiang; Xu, Jian; Brown, Gail J.; Zhou, Weidong.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 7222, 72220V, 23.03.2009.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Angle and polarization dependent characteristics of colloidal quantum dot absorption in fano filters on flexible substrates

AU - Chen, Li

AU - Yang, Hongjun

AU - Qiang, Zexuan

AU - Pang, Huiqing

AU - Ma, Zhenqiang

AU - Xu, Jian

AU - Brown, Gail J.

AU - Zhou, Weidong

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