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IOP Publishing’s green open access policy

Green open access is the process of archiving a copy of an accepted manuscript* on an institutional or subject repository in parallel to publishing with IOP Publishing. IOP Publishing believes that gold open access is the most sustainable route to open access but provides green open access options to those authors wanting or needing to share their work in this way. 

IOP Publishing allows authors of articles published on a subscription basis to post an accepted manuscript as follows: 

Posting the accepted manuscript 
On a personal website  On an institutional / subject repository 
Immediate posting allowed  No earlier than 12 months after publication of the final article 

 Subscription-based journals must insist on the 12-month embargo because immediate availability of peer-reviewed articles in public repositories removes the means of funding the journal’s costs of operation. For full details on your rights as an author of a subscription-based article, including full details on how and when you can share the accepted manuscript, please refer to our Author Rights Policy (or the relevant partner specific policy, if you have published with one of our society partners). 

Authors publishing an article on a gold open access basis can post the accepted manuscript on a repository immediately if required. 

For UK authors to comply with the requirements of the HEFCE post-2014 REF policy, IOP Publishing allows closed deposits on repositories within certain specified time-frames. To see full information on this, please refer to our Author Rights Policy. 

 If you are publishing the results of research funded by a US government agency, or if you are employed by the US government, then please see our guide to US public access. 

IOP Publishing will deposit papers in PubMed Central automatically in the following cases: 

  • Articles funded by the NIH: the accepted manuscript will be deposited after the 12-month embargo period; 
  • Gold open access articles funded by Wellcome Trust: the version of record will be deposited upon publication. 

 Authors may be permitted to opt out of an institutional open access policy. Further information on obtaining a waiver from an institutional open access policy can be found here. 

 IOP Publishing supports the sharing of preprints. View our preprint policy. 


*The accepted manuscript is ‘the version of the article accepted for publication including all changes made as a result of the peer review process, and which may also include the addition to the article by IOP Publishing of a header, an article ID, a cover sheet and/or an ‘accepted manuscript’ watermark, but excluding any other editing, typesetting or other changes made by IOP Publishing and/or its licensors’.