Single crystal wafer and solar battery cell

Details Single crystal wafer and solar battery cell Single crystal wafer and solar battery cell

2001-07-06

2008-12-02

Sefer, Ahmed (Department: 2893)

Active solid-state devices (e.g., transistors, solid-state diode

Thin active physical layer which is

Non-heterojunction superlattice

C257S627000, C257S628000, C257SE21230, C257SE21193, C257SE21244

Reexamination Certificate

active

07459720

ABSTRACT:
The present invention provides a single crystal wafer, wherein the main surface has a plane or a plane equivalent to a plane tilting with respect to a [100] axis of single crystal by angles of α (0°<α<90°) for the [011] direction, β (0°<β<90°) for the [01-1] direction and γ (0°≦γ<45°) for the [10-1] or [101] direction. Thus, a single crystal wafer that can sufficiently bear device production processes even with a small wafer thickness is provided and thereby loss of single crystal raw material is reduced. Further, by using such a wafer, MIS type semiconductor devices and solar cells are provided at a low cost.

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