Recent advances in applications and performance of inorganic hollow spheres in devices.

Inorganic hollow spheres have wide, important applications due to their unique structure, controllable morphology, and composition. Recent developments in the application and performance of inorganic hollow spheres in solar cells, UV photodectors, gas sensors, and supercapacitors are discussed. For each inorganic hollow sphere based device, a critical comment is given based on knowledge and related research experience. Some perspectives on the future research and development of these inorganic-hollow-sphere devices are given.