For what it is worth, I've dabbled in the AI field over the years. Fiction will only get you so far with ethics, IMO. I think this for two reasons:
a. Fiction rarely recognizes constraints; that is, you might end up addressing a problem that is not likely to emerge, maybe ever;
b. So much of what is billed as AI today is marketing rather than true AI, and if you want to honestly address problems emerging from the use of AI, you want to find some real AI issues
So, assuming you are SERIOUS about this, and have all sorts of time on your hands, consider the following --
Two books immediately come to mind: "Computer Power and Human Reason" by Joseph Weizenbaum, and "The Age of Spiritual Machines" by Ray Kurzweil. They are both well-respected non-fiction books that have stood the test of time (Weizenbaum's was written in 1976). They address concerns that, in my mind, are still valid -- mostly because we haven't made all that much progress in true AI in the past 30 years (opinions vary on this, but I think most academics agree we have not moved as quickly as we thought we would).
But, this being so late in the semester, and time is of the essence. So maybe fiction it is. Have you considered "Blade Runner" or its source "Do Androids Dream of Electric Sheep"; "The Moon is a Harsh Mistress"; the computer HAL in "2001" (although we only learn why HAL became psychopathic in the sequel "2010"); and perhaps the recent "Her"? Lots of books out there, these are just off the top of my head, if I think of more I'll post them here.
I'll go out on a limb and say even "Frankenstein" (the book, not the movies) might give you some interesting food for thought.
The issue I have with "I, Robot" is that Asimov constructed his Three Laws, then asked the question, "How would the Three Laws play out in real life, outside of the sterile laboratory in which they were conceived?" It is not so much a series of short stories about AI as it is an exploration of lexicon and logic.
Some terms worth Googling: Turing Test; Complex Adaptive Systems; Emergent Behavior; Neural Networks.
All of this is meant to give you some ideas about how AI works -- you can likely develop ideas about the ethics of it from there. I think that might be more fruitful than trying to expound on a fictional strawman, but Your Mileage May Vary.