“Green” open access refers to the practice of depositing a version of an article in a repository. Usually, that article version is freely accessible to the public. For example, if an author posts the accepted version of his or her NIH-funded article to PubMed Central, that article is said to be available through green open access.
Posting requirements and embargo periods vary by publisher. IEEE allows authors to post the accepted (not final) version of their article to their website, employer’s website, or a repository specified by their funding agency. More information on article posting and embargo policies may be found at the IEEE Author Center.
Authors may obtain the accepted version of their article through the IEEE Author Gateway.
“Gold” open access refers to articles that are freely available in their final form. Most gold open access articles are supported by article processing charges (APCs), rather than through subscriptions. APCs may be paid by the author, the author’s institution, or a funding agency.
IEEE offers three gold open access options. Authors may publish an individual OA paper in a subscription journal Hybrid, OA topical journal, or IEEE Access.