**Meet the editor**

Dr. J. Thirumalai received his PhD from Alagappa University, Karaikudi, in 2010. He was also awarded the Postdoctoral Fellowship from Pohang University of Science and Technology, Republic of Korea, in 2013. He worked as an assistant professor in physics at the B.S. Abdur Rahman University, Chennai, India (2011–2016). Currently, he is working as Assistant Professor of

Physics, SASTRA Deemed University, Kumbakonam (Tamil Nadu), India. His research interests focus on luminescence, self-assembled nanomaterials, and thin film optoelectronic devices. He has published more than 50 SCOPUS/ISI indexed papers and 10 book chapters, edited six books, and is a member of several national and international societies such as RSC, OSA, etc. He has edited two books for InTechOpen. He served as a principal investigator for a funded project towards the application of luminescence-based thin film optoelectronic devices, funded by the Science and Engineering Research Board, India.

Contents

**Preface VII**

**Irradiation 1**

Hermoso-Orzáez

Liu

Milardovich

Jagannathan Thirumalai

Chapter 2 **DC Network Indoor and Outdoor LED Lighting 15**

**Delayed Fluorescence Emitters 37**

**Low-Voltage Networks 57**

Guijie Li and Yuanbin She

Hideki Hirayama

Chapter 1 **Introductory Chapter: The Impression of Light-Emitting Diodes in Space-Age Advancements and Its Effect of Blue LED**

Chapter 3 **White Organic Light-Emitting Diodes with Thermally Activated**

Chapter 4 **The Impact of the Use of Large Non-Linear Lighting Loads in**

Chapter 5 **Tetradentate Cyclometalated Platinum(II) Complexes for**

Chapter 6 **New Generation of High Efficient OLED Using Thermally Activated Delayed Fluorescent Materials 103** Manish Kumar, Miguel Ribeiro and Luiz Pereira

Chapter 7 **Recent Progress in AlGaN Deep-UV LEDs 127**

Alfonso Gago-Calderón, Rami D. Orejón-Sánchez and Manolo J.

Dongxiang Luo, Zhiyuan He, Peng Xiao, Qunxing Liu and Baiquan

Natalio Milardovich, Leandro Prevosto, Miguel A. Lara and Diego

**Efficient and Stable Organic Light-Emitting Diodes 77**
