The papers included in this issue of ECS Transactions were originally presented in the symposium ¿State-of-the-Art Program on Compound Semiconductors 52 (SOTAPOCS 52)¿, held during the 218th meeting of The Electrochemical Society, in Las Vegas, Nevada from October 10 to 15, 2010.

This issue contains invited and contributed talks on the growth, processing, and characterization of electronic and photonic devices based upon compound semiconductor and oxide materials.

Section 1 addresses the most recent developments in processes at the semiconductor-solution interface include etching, oxidation, passivation, film growth, porous semiconductor formation, electrochemical, photoelectrochemical, electroluminescence and photoluminescence processes, electroanalytical measurements and related topics on both elemental and compound semiconductors. Section 2 addresses the most recent developments in compound semiconductors encompassing advanced devices, materials growth, characterization, processing, device fabrication, reliability, and related topics.