Book excerpt: This book shines a spotlight on the significance and usefulness of nanomaterials for the development of optoelectronic devices and their real-life applications. It presents an informative overview of the role of nanoscale materials in the development of advanced optoelectronic devices at nanoscale and discusses the applications of nanomaterials in different forms prepared by diverse techniques in the field of optoelectronic and biomedical devices. Major features, such as type of nanomaterials, fabrication methods, applications, tasks, benefits and restrictions, and saleable features, are well covered. Key features: • Explains the features of 0D, 1D, 2D and 3D nanomaterials • Exhibits the wide range of applications of nanomaterials in optoelectronics, photonics, biosensing, x-rays and x-ray detectors, medical imaging, visible light photodetectors, etc. • Discusses the advances in miniaturized nanoscale devices for biomedical applications • Describes the various preparation methods for advanced nanomaterials and their functionalization for fabrication of nanoelectronics devices