As far as I know, Muslim nations were ahead in terms of technology compared to Europe at some point. But if we take a look at recent history, the current Muslim nations are nowhere near Europe when it comes to tech..
So, when and how did this happen?
Are you asking about the end of the "Islamic Golden Age"? If so, check out this similar recent question, which contains some discussion and links to more
What do you mean by "technology" in this context?