Tuck Sleep have a primary mission of promoting awareness of sleep health and as part of that, they have researched the connection between sleep and mental health and summarized findings in patient-friendly online guides.
Their section on mental illness & sleep is available here:
Sleep is a key pillar of living a healthy life. This article has information on the science behind sleep, including what happens to your body while sleeping, why you need it, different types of sleep and how much sleep you need.
It also delves into the circadian system, external factors that affect it and disorders caused by disruptions to it.