Accession Number:

ADA099516

Title:

Investigations of Photovoltaic Ferroelectric-Semiconductor Nonvolatile Memory.

Descriptive Note:

Technical rept.,

Corporate Author:

HARRY DIAMOND LABS ADELPHI MD

Personal Author(s):

• Brody,Philip S.

Report Date:

1981-03-01

Pagination or Media Count:

31.0

Abstract:

The feasibility of a new kind of nonvolatile digital memory is proposed and examined. The basis of the memory is an anomalous photovoltaic phenomenon found in ferroelectric ceramics--a photovoltage with a polarity that depends on the direction of the remanent polarization. Described are proposed memory cell structures that function in matrix arrangements as nonvolatile readwrite random access memory or electrically alterable programmable read-only memory. Test results obtained with an experimental test unit also are described. Included is a survey of methods for producing ferroelectric films. Author

Descriptors:

• *SEMICONDUCTORS
• *FERROELECTRIC MATERIALS
• *PHOTOVOLTAIC EFFECT
• *NONVOLATILE MEMORIES
• POLARIZATION
• WAVEFORMS
• THIN FILMS
• SUBSTRATES
• FIELD EFFECT TRANSISTORS
• RANDOM ACCESS COMPUTER STORAGE
• MEMORY DEVICES
• CERAMIC MATERIALS
• DIGITAL COMPUTERS
• READ ONLY MEMORIES
• SCHEMATIC DIAGRAMS
• HYBRID CIRCUITS

Subject Categories:

• Electrical and Electronic Equipment
• Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE