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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 145 records · Page 8

Process controls introduction of selected impurities into semiconductor wafers

Modified three-step process controls the concentration of lithium diffused as a dopant into the base region of a diffused n-on-p silicon solar cell wafer. Part of the surface layer of the base region of the p-type silicon containing the diffused dopant is removed, prior to redistributing the remaining portion of the dopant into the bulk of the wafer.

Bartholomay, W. C.↗

Introduction

Objectives, launch and landing operations, and lunar surface photography of Surveyor I spacecraft

SPACE PHOTOGRAPHY↗

General introduction and methods

Aims and methods of program to determine effects of pure oxygen atmosphere on aviators confined for 34-days, with periods at high altitude and at sea level

OXYGEN SYSTEM↗

Introduction

Evaluation of potential locations for Airborne Range and Orbit Determination ground stations

TRACKING STATION↗

Introduction

Optical birefringent devices - synthesis of lossless networks, double-pass technique, optical amplitude modulator, and naturally birefringent and electro-optic networks

NETWORK SYNTHESIS↗

Introduction

NASA sponsored research activity at Experimental Astronomy Laboratory

ASTRONOMICAL OBSERVATORY↗