STUDI HASIL PHOTOLUMINESCENCE PADA LAPISAN TIPIS TIO2 YANG DIDOPING Sn DAN HUBUNGANNYA DENGAN AKTIFITAS FOTOKATALITIK DALAM MENDEGRADASI SENYAWA ASAM STEARAT SEBAGAI MODEL POLUTAN

Authors

  • Diana V. Wellia Jurusan Kimia, Universitas Andalas, Indonesia

DOI:

https://doi.org/10.25077/jif.6.2.40-44.2014

Abstract

Photoluminescence merupakan suatu teknik non-destructive dan memiliki sensitivitas yang tinggi untuk mempelajari sifat fotofisika dan fotokimia suatu semikonduktor. Pengukuran photoluminescence dari beberapa sampel lapisan tipis TiO2 yang didoping Sn dilakukan pada suhu kamar. Panjang gelombang eksitasi yang digunakan adalah 300 nm dengan lebar celah emisi 1 nm. Photoluminescence merupakan suatu teknik pengukuran yang bisa memberikan informasi mengenai kekosongan oksigen atau cacat pada permukaan kristal, kondisi permukaan serta pemisahan atau penggabungan muatan, yang berhubungan erat dengan aktifitas fotokatalitiknya. Pada percobaan ini, doping dengan Sn memperlihatkan pengaruh yang jelas pada intensitas photolumniscence nanopartikel TiO2 pada puncak 370 nm tetapi tidak terlalu jelas pada puncak 470 nm. Sampel Sn-3 (dengan konsentrasi Sn4+ 3.2 wt%) menunjukkan intensitas puncak yang paling rendah dibandingkan sampel-sampel lainnya yang menunjukkan rendahnya kecepatan rekombinasi elektron-hole. Hal ini mendukung hasil aktifitas fotokatalitik Sn-3 yang lebih baik dibandingkan dengan sampel-sampel lainnya.

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Published

2014-09-05

How to Cite

Wellia, D. V. (2014). STUDI HASIL PHOTOLUMINESCENCE PADA LAPISAN TIPIS TIO2 YANG DIDOPING Sn DAN HUBUNGANNYA DENGAN AKTIFITAS FOTOKATALITIK DALAM MENDEGRADASI SENYAWA ASAM STEARAT SEBAGAI MODEL POLUTAN. JURNAL ILMU FISIKA | UNIVERSITAS ANDALAS, 6(2), 40–44. https://doi.org/10.25077/jif.6.2.40-44.2014

Issue

Vol. 6 No. 2 (2014): September 2014

Section

Riset Artikel

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