Hello Vahe,
Which DSpace version do you use? The answer depends on the version. I can only give advise for Version 7.x.
If you use Dspace 7.x, you have to make changes in the correspondend html template in your dspace-angular source code (in your used theme, e.g. src/themes/custom/app) and recompile your code afterwards. So you need to know some stuff about the angular frontend in order to do that.
(additionally, you may want to make this field available in your submission form, which would be another extra step).
In vanilla Dspace 7, the following template is generating your item page by default:
[path to your theme]/app/item-page/simple/item-types/untyped-item/untyped-item.component.html
Please note: If you have activated the publication entities (which is not activated by default), you need to edit .../
item-types/publication/publication.component.html instead.
The metadata displayed on the item page is divided into two columns by default. In the html template file, choose the column in which you want to have dc.identifier.doi displayed and add this at the desired position:
<ds-item-page-uri-field [item]="object" [fields]="['dc.identifier.doi']" [label]="'item.page.doi'">
</ds-item-page-uri-field>
You should thy such changes in developer mode. But so much for now. If you use Dspace 7 and would like to know more about this, please just reply.
Kind regards
Matthias