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All Journal BERKALA FISIKA Jurnal Ilmu Dasar Jurnal Sains Materi Indonesia Jurnal Informatika Teknologi dan Sains (Jinteks) Makara Journal of Technology
Mahfuddin Zuhri
Departemen Fisika Fakultas Ilmu Matematika Dan Pengetahuan Alam IPB University
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

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THE USE OF POLYMER GEL ELECTROLYTE CONTAINING I-/I3- REDOX COUPLE TO ASSEMBLY A SOLID STATE DYE SENSITIZED TiO2 SOLAR CELL Akhiruddin Maddu; Irmansyah Irmansyah; Mahfuddin Zuhri
Jurnal Sains Materi Indonesia Vol 9, No 1: OKTOBER 2007
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (421.707 KB) | DOI: 10.17146/jusami.2007.9.1.4826

Abstract

THE USE OF POLYMER GEL ELECTROLYTE CONTAINING I-/I3- REDOX COUPLE TO ASSEMBLY A SOLID STATE DYE SENSITIZED TiO2 SOLAR CELL. A solid state dye sensitized TiO2 nanocrystalline solar cells was assembled employing a polymer gel electrolyte contains of iodide/triiodide (I-/I3-) redox couple. The use of solid electrolyte based on polymer matrix for redox ‘couples is aimed to overcome several problems of liquid cell, such as leaks of electrolyte that result in degradation of solar cell. TiO2 nanocrystalline layer was grown on TCO glass substrate by doctor blade technique was stained by synthetic dye Ruthenium 535 for a day. To complete the cell, a polymer gel based on poly(ethylene glycol) (PEG) containing I-/I3- redox couple was sandwiched between a working electrode (nanoporous TiO2 layer on conductive glass substrate) and a counter electrode (graphite sheet). The solid-state cell does not need a clipp, so the gel polymer electrolyte also acts as a glue to join the electrodes. Two cells assembled with different amount of I-/I3- redox couple used in each cell, one of cell use 20 drops of Iodolyte (contains (I-/I3- redox couple) and another cell use 30 drops of Iodolyte solution (purchased fromSolaronix, SA). The cells were characterized their photovoltaic performances included: open-circuit voltage (Voc), short-circuit current (Isc),maximum power (Pmax), fill factor (FF) and energy conversion efficiency.
Fabrication and Characterization Dye-Sensitized Solar Cell based on TiO2/SnO2 Composit Electrode and Polymer Electrolite Irmansyah Irmansyah; Akhiruddin Maddu; Mahfuddin Zuhri
Jurnal ILMU DASAR Vol 9 No 2 (2008)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.271 KB)

Abstract

A solid-state dye-sensitized solar cell based on TiO2/SnO2 composite electrode and polyethylene glycol (PEG) based electrolyte has been fabricated. The solar cell was formed in sandwich structure, which two electrodes sandwiching polymer electrolyte containing a redox couple (I-/I3-). One of the electrode was TiO2/SnO2 composite layer on TCO (transparent conducting oxide) coated glass substrate which sensitized with Ruthenium complex dye as electron donor, and the other electrode was a carbon sheet as a counter electrode. Active area of solar cell was 1.5 cm x 1 cmm. The solar cell was tested by irradiation with mercury lamp of 400 Watt with intensity of 30 mW/cm2 at a distance of 30 cm and sunlight with intensity of 36 mW/cm2. The cell tested with mercury lamp result in an open circuit voltage (VOC) of 420 mV, short circuit current (ISC) of 52 μA, maximum power (Pmax) of 10.4 μW, fill factor (FF) of 48% and energy conversion (η) of 0.023 %. On the other hand, the cell tested with sunlight source result in VOC=480 mV, ISC=48μA, Pmax=12.6 μW, FF=55% and η=0.023%.
UJI KARAKTERISTIK SENSOR SUHU DAN KELEMBABAN MULTI- CHANNEL MENGGUNAKAN PLATFORM INTERNET OF THINGS (IOT) Erus Rustami; Rima Fitria Adiati; Mahfuddin Zuhri; Ardian Arif Setiawan
BERKALA FISIKA Vol 25, No 2 (2022): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Telah  berhasil  dilakukan  uji  kinerja  empat  jenis  sensor  suhu  dan  kelembaban  yang  tersedia  di pasaran,  yaitu  DHT22,  BME280,  SHT31  dan  DS18B20.    Sensor  tersebut  dihubungkan  dengan WeMos  D1  R1  ESP8266  yang  bertugas  untuk  mengelola  dan  mengirimkan  data  ke  platform internet  of  things  (IoT)  ThingSpeak.  Pengiriman  data  menggunakan  protokol  message  queue telemetry transport (MQTT) yang berdaya rendah (low-power) dan dapat diandalkan (reliable). Laman web ThingSpeak menampilkan grafik suhu dan kelembaban masing-masing sensor. Data suhu dan kelembaban tersebut dibandingkan dengan thermohygrometer sebagai referensi. Hasil pengujian menunjukkan bahwa sensor mampu mendeteksi perubahan suhu ruangan dengan nilai pembacaan  yang  tidak  berbeda  jauh  dengan  referensi.  Secara  umum,  semua  sensor  bekerja dengan  cukup  baik  yang  ditandai  dengan  koefisien  determinasi  yang  cukup  tinggi  pada  kurva kalibrasi yaitu lebih dari 0,94 untuk suhu dan 0,96 untuk kelembaban.
PENERAPAN IOT UNTUK MONITORING PEMBERIAN PAKAN IKAN OTOMATIS PADA AKUARIUM DI PERIKANAN SV IPB Aep Setiawan; Erlin Arlitasari; Mahfuddin Zuhri; Andri Hendriana
Jurnal Informatika Teknologi dan Sains Vol 4 No 3 (2022): EDISI 13
Publisher : Program Studi Informatika Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (652.379 KB) | DOI: 10.51401/jinteks.v4i3.1901

Abstract

Fish feeding is one of the things that needs to be considered in aquaculture so that the fish produced are of high quality. Activities in fisheries at the Sokasi IPB school, the majority of which are still carried out manually, are fish feeding activities. Based on these problems, a system was designed that can control and monitor the process of feeding and supplying fish feed automatically using nodeMCU ESP8266. The tool can be accessed anywhere and anytime through the Blynk app. It is hoped that this tool can be used as a solution so that fish feeding activities in the Fisheries of the IPB Vocational School become faster, easier, and more efficient. Fish are fed according to the scheduled time with an appropriate dose. The process of feeding fish and feed supplies can be monitored remotely through the Blynk application. Alerts in the form of notifications and alarm sounds coming from the buzzer will be active if the value of the feed supply is smaller than 5 cm. The error value processed from the test is 0%.
The use of Red Cabbage’s anthocyanine extract as a photosensitizer on a Dye-Sensitized Nanocrystalline TiO2 Solar Cell Maddu, Akhiruddin; Zuhri, Mahfuddin; Irmansyah, Irmansyah
Makara Journal of Technology Vol. 11, No. 2
Publisher : UI Scholars Hub

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Abstract

The use of Red Cabbage’s anthocyanine extract as a photosensitizer on a Dye-Sensitized Nanocrystalline TiO2 Solar Cell. A solid-state dye-sensitized nanocrystalline TiO2 solar cell utilizing anthocyanin extract form red cabbage as photosensitizer was fabricated. The solar cell was formed in sandwich structure, which two electrodes sandwiching polymer electrolyte containing a redox couple (I-/I3 -). One of the electrodes, namely working electrode, TiO2 layer on TCO (transparent conducting oxide) coated glass substrate was sensitized with anthocyanin dye as electron donor in the system. Another electrode was a carbon sheet as a counter electrode. Gel electrolyte based on PEG (polyethylene glycol) containing a redox couple (I-/I3 -) used instead of liquid electrolyte in this photoelectrochemical cell. Two fabricated cells have an active area of 1 cm2 were soaked with anthocyanine dye for 1 hr and 24 hrs, respectively. The cells were tested by irradiation with halogen lamp of 24 Watt with intensity 4 mW/cm2 at a distance 30 cm. The testing results of the cells show an ideal I-V characteristic with output parameters: open circuit voltage (VOC) of 500 mV, short circuit current (ISC) of 5,6 μA and 7,2 μA for each cells, fill factor (FF) of 48% for both cells, energy conversion (η) of 0.023 % and 0,055 % for the cells with 1 hr and 24 hrs dye soaked, respectively.
Co-Authors Aep Setiawan Akhiruddin Maddu Andri Hendriana Ardian Arif Erlin Arlitasari Erus Rustami Irmansyah . Irmansyah Irmansyah Irmansyah Irmansyah Irmansyah Irmansyah Rima Fitria Adiati