La-doped PbZrTiO/sub 3/(PLZT) thin film optical detectors (TOD) for retinal implantation-a "bionic" eye

Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002. Pub Date : 2002-05-28 DOI:10.1109/ISAF.2002.1195887

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

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引用次数: 5

Abstract

A new ceramic optical microdetector 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 PbZrTiO/sub 3/(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 /spl sim/ 1000 V/W. Individual detectors are fabricated by photolithography and etch processing as is common in the microelectronics industry. Detectors 40 /spl mu/m 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.

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用于视网膜植入的la掺杂PbZrTiO/sub 3/(PLZT)薄膜光学探测器(TOD) -仿生眼

一种新型陶瓷光学微探测器用于视网膜植入，可直接替代视网膜色素性视网膜炎(RP)和老年性黄斑变性(AMD)等营养不良患者受损的视网膜光探测器。薄膜光学探测器(TOD)是在原子有序Pt薄膜层外延生长的原子有序la掺杂PbZrTiO/ sub3 /(PLZT)层构成的异质结构器件。TOD具有光学响应，在可见光区域，其峰值约为550纳米，其灵敏度与眼睛响应重叠，从400纳米到650纳米。器件在可见光范围内的响应度为/spl sim/ 1000v /W。单个探测器是由光刻和蚀刻加工制造的，这在微电子工业中是常见的。直径为40 /spl mu/m的探测器已经过加工，并与新开发的聚合物载流子层技术相结合，以便于操作和将微探测器阵列植入眼睛。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.

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