Karakterisasi Arus-Tegangan Sensor Gas Hidrogen Dari Bahan Semikonduktor SnO2 Didoping dengan Na2CO3

Authors

  • Ingka Amelia Laboratorium Fisika Material, Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Andalas
  • Elvaswer Elvaswer Laboratorium Fisika Material, Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.7.4.353-358.2018

Abstract

Telah dilakukan karakterisasi sensor gas hidrogen berupa pelet dari bahan semikonduktor SnO2 didoping dengan Na2CO3. Pelet sensor gas hidrogen dibuat dengan variasi konsentrasi doping. Proses pembuatan sensor gas hidrogen diawali dengan pencampuran bahan dengan menggunakan metode reaksi dalam keadaan padat. Sensor gas diuji pada temperatur ruang dengan melihat karakteristik I-V, sensitivitas, selektivitas, konduktivitas, waktu respon dan kristalinitas sampel. Karakteristik I-V menunjukkan bahwa sampel dengan 92% mol SnO2 + 8% mol Na2CO3 memiliki nilai sensitivitas tertinggi yaitu 4,83 dan nilai selektivitas 2,92 pada tegangan 9 Volt. Konduktivitas tertinggi dimiliki sampel dengan 94% mol SnO2 + 6% mol Na2CO3 yaitu 23,11 x 10-4 /Ωm pada lingkungan hidrogen. Waktu respon sampel 92% mol SnO2 + 8% mol Na2CO3 pada tegangan 9 Volt untuk gas hidrogen adalah 63 detik dan untuk gas oksigen adalah 69 detik. Hasil XRD menunjukkan bahwa ukuran kristal SnO2 yang didoping dengan Na2CO3 lebih kecil dibandingkan dengan bahan SnO2 tanpa doping.

Kata kunci: konduktivitas, selektivitas, sensitivitas, sensor gas hidrogen, waktu respon.

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Published

2018-10-01

Issue

Vol. 7 No. 4 (2018)

Section

Articles

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Copyright (c) 2018 Ingka Amelia, Elvaswer Elvaswer

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