In an era dominated by electronic devices and interconnected technologies, the weak point of this technology remains the limited lifespan and lengthy maintenance of conventional batteries. The pervasive use of wireless sensor networks and Internet of Things (IoT) applications has accentuated the inadequacies of battery technology, which has not kept pace with the miniaturization of electronic devices. Frequent battery replacements for remote devices have become a critical bottleneck, hindering the seamless operation of devices that play a pivotal role in various industries. Addressing this universal challenge head-on, Emerging Materials, Technologies, and Solutions for Energy Harvesting emerges as a tool for innovation and sustainability. This book explores energy harvesting, a paradigm shift that transforms ambient energy sources such as thermal gradients, solar energy, radio frequency, and vibration energy into a viable and enduring power solution. By presenting innovative materials, technologies, and solutions, the book is the key to unlocking a future where devices can thrive on efficient, cost-effective, and compact energy harvesting systems, eliminating frequent battery replacements. This comprehensive guide identifies the issue but provides a transformative solution. Readers embark on a journey through the intricacies of energy harvesting research, exploring topics ranging from system design and power management to the fundamentals of thermoelectric, piezoelectric, and pyroelectric materials. It is an invaluable resource that empowers individuals to expand their theoretical knowledge and practically apply emerging solutions in their research and professional endeavors. Emerging Materials, Technologies, and Solutions for Energy Harvesting is not just a book; it is the bridge to a future where sustainable energy solutions redefine the landscape of electronic devices and wireless technologies.