Do all open access journals use a peer review procedure?

High-quality open access journals are always peer reviewed. Funding from FAU’s open access publishing fund is only awarded for articles in high-quality open access journals.
Information about the selection of reviewers is available, for example, at:
http://www.biomedcentral.com/about/peerreview
http://publications.copernicus.org/services/public_peer_review.html