PART I. INTRODUCTION Challenges in Energy Conversion Devices Basics of Atomic Layer Deposition (ALD) PART II. PHOTOVOLTAICS ALD for Passivation in Silicon Solar Cells ALD for Light Absorption ALD for Interface Engineering ALD for Charge Transport PART III. ELECTROCHEMICAL ENERGY STORAGE ALD for Supercapacitors ALD of Electrocatalysts in Fuel Cells and Electrolyzers ALD of Lithium Ion Battery Materials ALD of Oxide Conductors in Fuel Cells PART IV. PHOTOELECTROCHEMICAL AND THERMOELECTRIC ENERGY CONVERSION ALD in Photoelectrochemical Devices ALD of Thermoelectric Materials sakriti opis