[1] Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India
[2] WiTec, Bengaluru 560094, Karnataka, India
[3] Mahatma Gandhi Univ, Sch Energy Mat, Kottayam 686560, Kerala, India
[4] Mahatma Gandhi Univ, Sch Energy Mat, Priyadarshini Hills PO, Kottayam 686560, Kerala, India