Karakterisasi I-V Semikonduktor Heterokontak CuO/ZnO(TiO2) Sebagai Sensor Gas Hidrogen

Authors

  • Mardiah Mardiah
  • Elvaswer Elvaswer

DOI:

https://doi.org/10.25077/jif.9.1.7-14.2017

Abstract

Telah dilakukan karakterisasi sensor gas hidrogen berupa pelet heterokontak dengan lapisan pertama pelet adalah 100% mol CuO dan lapisan kedua pelet adalah ZnO yang didoping 2% mol, 4% mol, 6% mol, 8% mol dan 10% mol TiO2. Tahap pembuatan sensor hidrogen terdiri atas pencampuran bahan, kalsinasi pada temperatur 500 oC selama 4 jam, penggerusan, kompaksi, dan sintering pada temperatur 600 oC selama 4 jam. Sensor hidrogen diuji pada temperatur ruang dengan melihat karakteristik arus dan tegangan (I-V), nilai sensitivitas, nilai konduktivitas, waktu respon dan karakterisasi XRD. Karakteristik I-V menunjukkan perubahan terbesar terjadi pada sampel CuO/ZnO(4% mol TiO2). Nilai sensitivitas tertinggi dimiliki sampel CuO/ZnO(4% mol TiO2) sebesar 14,42 pada tegangan 30 volt. Nilai konduktivitas tertinggi dimiliki sampel CuO/ZnO(4% mol TiO2) dengan nilai konduktivitas di udara 2,14x10-5 /Ωm dan nilai konduktivitas pada lingkungan hidrogen adalah 2,76x10-5 /Ωm. Waktu respon sampel CuO/ZnO (4% mol TiO2) adalah 48 detik. Hasil XRD menunjukkan ukuran kristal sampel ZnO + 4% mol TiO2 lebih besar daripada sampel ZnO murni. Campuran 96% mol ZnO + 4% mol TiO2 telah terbentuk senyawa baru yaitu Zn2TiO4.

 

Kata kunci : heterokontak, karakterisasi I-V, sensitivitas, sensor hidrogen, waktu respon

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How to Cite

Mardiah, M., & Elvaswer, E. (2017). Karakterisasi I-V Semikonduktor Heterokontak CuO/ZnO(TiO2) Sebagai Sensor Gas Hidrogen. JURNAL ILMU FISIKA | UNIVERSITAS ANDALAS, 9(1), 7–14. https://doi.org/10.25077/jif.9.1.7-14.2017

Issue

Vol. 9 No. 1 (2017): March 2017

Section

Research Article

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