Karakteristik Arus-Tegangan Komposit dari Bahan Semikonduktor ZnO-TiO2 Sebagai Sensor Gas Hidrogen
DOI:
https://doi.org/10.25077/jfu.6.3.211-216.2017Abstract
Telah dilakukan karakterisasi sensor gas hidrogen berupa pelet dengan bahan ZnO-TiO2. Proses pembuatan sensor gas hidrogen diawali dengan pencampuran bahan menggunakan metode reaksi dalam keadaan padat. Sensor gas hidrogen diuji pada temperatur ruang dengan melihat karakteristik I-V, nilai sensitivitas, nilai konduktivitas, dan waktu respon. Berdasarkan karakteristik I-V diketahui bahwa sampel 70% mol ZnO + 30% mol TiO2 memiliki sensitivitas 6,67 pada tegangan 21 volt lebih tinggi daripada sampel 30% mol ZnO + 70% mol TiO2 sebesar4,5 pada tegangan 3 volt. Nilai konduktivitas sampel 70% mol ZnO + 30% mol TiO2 yaitu 2,15 x 10-3/Ωmlebih tinggi daripada sampel 30% mol ZnO + 70% mol TiO2 yaitu 1,34 x 10-3pada lingkungan hidrogen. Waktu respon dilakukan pada sampel yang memiliki sensitivitas yang lebih tinggi yaitu pada sampel 70% mol ZnO + 30% mol TiO2. Waktu respon pada sampel 70% mol ZnO + 30% mol TiO2 pada tegangan 21 volt adalah 48 sekon.
Kata kunci: sensor gas hidrogen, ZnO-TiO2, konduktivitas, sensitivitas, waktu respon
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Copyright (c) 2017 Rozi Riwanda, Elvaswer Elvaswer
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