Method of making .alpha.-silicon powder, and electrophotographic materials incorporating said powder
US4356246A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1980 |
| Grant date | Oct 26, 1982 |
| Priority date | — |
| Expiry date | Jun 16, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A noncrystalline silicon powder having excellent photoconductivity is described, comprising silicon and hydrogen, exhibiting an infrared absorption spectrum characterized by absorption peaks centered at about 2000 cm.sup.-1 and 630 cm.sup.-1, wherein the height of the absorbance peak at 2000 cm.sup.-1 is at least one-tenth the height of the peak centered at 630 cm.sup.-1, and exhibiting a spin density of not more than 10.sup.18 cm.sup.-3 determined by electron spin resonance spectroscopy; the noncrystalline silicon powder is used as highly efficient photoconductor in photoconductive compositions utilized for the production of electrophotographic photoreceptors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.