La-doped PbZrTiO3(PLZT) thin film optical detectors (TOD) for retinal implantation - A "bionic" eye

A. Zomorrodian, N. J. Wu, S. Wilczak, C. Colbert, A. Ignatiev, C. A. Garcia

Research output: Contribution to conferencePaperpeer-review

4 Scopus citations

Abstract

A new ceramic optical micro-detector has been developed for retinal implant as a direct replacement for damaged retinal photo-detectors in patients with dystrophies such as Retinitis Pigmentosa (RP) and Age-related Macular degeneration (AMD). The thin film optical detector (TOD) is a heterostructure device composed of an atomically ordered La-doped PbZrTiO3(PLZT) layer epitaxially grown on an atomically ordered Pt thin film layer. The TOD has an optical response, which in the visible region has a peak at around 550 nm with a sensitivity that overlaps the eye response from 400 nm to 650 nm. The device responsivity in the visible range is at a value of ∼ 1000 V/W. Individual detectors are fabricated by photolithography and etch processing as is common in the microelectronics industry. Detectors 40 μm in diameter have been processed and have been integrated with a newly developed polymer carrier layer technique for ease of handling and implantation of microdetector arrays into the eye.

Original languageEnglish (US)
Pages129-132
Number of pages4
StatePublished - 2002
Externally publishedYes
EventProceedings of the 13th IEEE International Symposium on Applications of Ferroelectronics - Nara, Japan
Duration: May 28 2002Jun 1 2002

Conference

ConferenceProceedings of the 13th IEEE International Symposium on Applications of Ferroelectronics
Country/TerritoryJapan
CityNara
Period5/28/026/1/02

Keywords

  • Bionic
  • Eye
  • Ferroelectrics
  • Micro-Detector
  • Thin film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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