Look for places that have professors in trade, development, and international affairs, and I think you'll get the closest to what you're looking for. Things such as corruption, transparency, the rule of law, the human development index, pricing for water and sanitation, health, education, etc. all fall into "human rights", but "human rights" is not an explicit subdiscipline in economics. The problem with development is that it's so vast and virtually anything can be called a human right these days. You can also model virtually anything using economics ;-). Are you interested in any particular sector of human rights/development?