1. Department of Materials Science and Engineering, Myongji University, Yongin 17058, Republic of Korea
2. Department of Semiconductor Engineering, Myongji University, Yongin 17058, Republic of Korea
3. Department of Energy Science and Center for Artificial Atoms, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
4. SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon 16419, Republic of Korea
5. Department of Advanced Materials Engineering, Kyonggi University, Suwon 16227, Republic of Korea
6. Department of Photonics and Nanoelectronics, Hanyang University ERICA, Ansan 15588, Republic of Korea