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All Journal International Journal of Renewable Energy Development ELKHA : Jurnal Teknik Elektro PROSIDING SEMINAR KIMIA Jurnal Inotera Eco-Iqtishodi : Jurnal Ilmiah Ekonomi dan Keuangan Syariah PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Jurnal Ilmu dan Inovasi Fisika
Dadan Hamdani, Dadan
Program Studi Fisika FMIPA Universitas Mulawarman Jl. Barong Tongkok No.4 Kampus Gn. Kelua Samarinda 75123
Religion Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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Standarisasi Produk Untuk Perlindungan Konsumen Sebagai Implementasi Maqashid Al-Syari’ah Hamdani, Dadan; Nurjamil
Jurnal Ekonomi Syariah Vol 1 No 2 (2020): Eco-Iqtishodi : Jurnal Ilmiah Ekonomi dan Keuangan Syariah
Publisher : Program Studi Ekonomi Syariah Institut Manajemen Koperasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32670/ecoiqtishodi.v1i2.172

Abstract

Tujuan utama penelitian ini adalah untuk menganalisis peraturan mengenai standarisasiproduk dalam upaya melindungi konsumen dihubungkan dengan implementasiMaqashid al-Syari’ah. Penelitian yang dilakukan merupakan penelitian deskriptifanalitis dengan pendekatan yuridis normatif. Data diperoleh dari penelitian kepustakaan(library research) selanjutnya dianalisis secara kualitatif dan disimpulkan bahwastandarisasi produk nasional Indonesia sangat erat kaitannya dengan perlindungankonsumen dan merupakan wujud nyata implementasi Maqashid al-Syari’ah berupaterlindunginya agama (hifdzu din), terlindunginya jiwa (hifdzu nafs), terlindunginyapikiran (hifdzu 'aql), terlindunginya harta (hifdzu maal), dan terlindunginya keturunan(hifdzu nasab).
PENGARUH FUNGSI KERJA KONTAK DEPAN PADA KINERJA SEL SURYA BERBASIS a-Si:H : STUDI NUMERIK Hamdani, Dadan; Cahyono, Yoyok; Yudoyono, Gatut; Darminto, Darminto
PROSIDING SEMINAR KIMIA 2021: SEMINAR NASIONAL KIMIA 2021
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Dalam studi ini, pengaruh fungsi kerja kontak depan terhadap kinerja sel surya struktur ITO/(p)a-Si:H/(i)a-Si:H/(n)a-Si:H/ZnO/Ag yang difabrikasi dengan metode RF-PECVD disimulasi menggunakan perangkat AFORS-HET. Berdasarkan pada hasil simulasi menunjukkan bahwa nilai WFITO divariasikan antara 4.95 to 5.55 eV dengan tujuan untuk menentukan nilai optimum WFITO dalam mendapatkan sel surya dengan efisiensi tinggi. Hasil simulasi menunjukkan bahwa nilai optimum fungsi kerja kontak depan pada antar-muka ITO/(p)a-Si:H adalah sekitar 5.45 eV yang menghasilkan efisiensi sebesar 7.22% (VOC = 1063 mV, JSC = 8.60 mA/cm2, FF = 78.93%) untuk sel surya Strukture-2. Hasil studi simulasi ini menghasilkan parameter-parameter optimum yang dapat dilanjutkan dengan eksperimen untuk mendapatkan sel surya yang lebih baik. Kata kunci: WFITO; sel surya; AFORS-HET; efisiensi.
The Effects of Dopant Concentration on the Performances of the a-SiOx:H(p)/a-Si:H(i1)/a-Si:H(i2)/µc-Si:H(n) Heterojunction Solar Cell Hamdani, Dadan; Prayogi, Soni; Cahyono, Yoyok; Yudoyono, Gatut; Darminto, Darminto
International Journal of Renewable Energy Development Vol 11, No 1 (2022): February 2022
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.40193

Abstract

In this work, the imbalances in band gap energy between p-window layer and intrinsic layer (p/i interface) in p-i-n type solar cells to suppress charge recombination adopting with the addition of buffer layer, at p/i interface, namely solar cell structures without buffer (Cell A) and with buffer (Cell B). Using well-practiced AFORS-HET software, performances of Cell A and Cell B structures are evaluated and compared to experimental data. A good agreement between AFORS-HET modelling and experimental data was obtained for Cell A (error = 1.02%) and Cell B (error = 0.07%), respectively. The effects of dopant concentrations of the p-type and n-type were examined with respect to cell B for better performance by analysing the energy band diagram, the electric field distribution, the trapped hole density, the light J-V characteristics, and the external quantum efficiency. The simulated results of an optimised Cell B showed that the highest efficiency of 8.81% (VOC = 1042 mV, JSC = 10.08 mA/cm2, FF = 83.85%) has been obtained for the optimum dopant values of NA = 1.0 x 1019 cm-3 and ND = 1.0 x 1019 cm-3, respectively. A comparison between experimental data and simulation results for Cell B showed that the conversion efficiency can be enhanced from 5.61% to 8.81%, using the optimized values
ANALISIS TERMODINAMIKA SISTEM HIBRIDA PV/T BERDASARKAN MODEL TERMAL Dadan Hamdani; Yuki N Nasution
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2013
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

In this paper, the analysis of PV/T system with air collector have been done as an attempt to investigate the system performances based on energy and exergy analysis using thermodynamics (thermal) analysis. The experimental data for a typical day of July, 9 th 2012 for Bontang City, East Kalimantan are used for calculation of the energy, exergy, energy and exergy efficiencies of the PV and PV/T systems. It is found that varies flow of energy (thermal and electrical) from a minimum of 312 W to maximum of 522 W, the PV exergy varies from a minimum of 18 W to a maximum of 41 W corresponding to the total energy of system and PV/T exergy varies from a maximum of 117 W to a minimum of 52 W, respectively. Meanwhile, the exergy efficiency for the PV/T system varies from a maximum of 18% to a minimum of 12% and exergy efficiency for the PV system varies from a minimum of 3% to a maximum 6%.
ANALISIS EKSERGI MODUL PV BERDASARKAN SPEKTRUM PANJANG GELOMBANG CAHAYA MATAHARI Dadan Hamdani; Lambang Subagio
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (813.484 KB) | DOI: 10.21009/0305020602

Abstract

PV modul performance can be evaluated in terms both energy and exergy based on wavelengths spectrum of the sun method, which take into account the contribution of chemical potential in term photonic energy and exergy corresponding to photonic energy of a PV module during tested (09:00 – 15:00). Based on this method, it is found that effect of wavelength of visible spectrum (300 – 800 nm) is essential on the PV performance and as the result of this evaluation is photonic energy higher than photonic exergy due to the irreversibilities of the real process. Keywords : energy and exergy, wavelengths spectrum, PV module , photonic, irreversibilities.
Stability Analysis of Mathematical Model of Spread of Covid19 SEIRS Type with Constant Birth Rate Asmaidi As Med; Syaripuddin; Dadan Hamdani; Resky Rusnanda
Jurnal Inotera Vol. 8 No. 1 (2023): January-June 2023
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol8.Iss1.2023.ID229

Abstract

The Covid19 case dated 11 November 2021 recorded that the human population died from Covid19 (143,595 people) with confirmed cases (4,249,323 cases) and active cases (9,537 cases). Based on these data, it can be concluded that COVID-19 is an acute and deadly disease. In addition to deaths, due to Covid-19, namely the increase in divorce cases, decreased income in the economy and tourism. In this study, the author made a mathematical modeling of Covid19 type as an effort to prevent the spread of Covid19. In the modeling there are human populations susceptible to Covid19 , human populations have been vaccinated , human populations have not been vaccinated , human populations are exposed , human populations are infected with Covid19 , and human populations recovered from Covid19 . The research objectives are 1) to build a mathematical model of Covid19, 2) to determine the fixed point and basic reproduction numbers, and 3) to analyze the stability of the fixed point. This type of research includes applied science research. The research procedure is 1) observing real phenomena, 2) searching literature, 3) determining variables, parameters, and assumptions in mathematical modeling, 4) building a mathematical model of Covid19, 5) analyzing the Covid19 mathematical model in the form of fixed points, basic reproduction numbers, and fixed point stability. The results of the analysis 1) the mathematical model type has a fixed point without disease and an endemic fixed point, 2) a fixed point without disease is stable for the condition , and the endemic fixed point is stable for the condition .
Analysis of ITO/a-Si:H(p)/a-Si:H(i)/c-Si(n)/Al HIT (Heterostructure with Intrinsic Thin Layer) solar cell performances. Igor Levi Satriani; Rahmawati Munir; Adrianus Inu Natalisanto; Dadan Hamdani
ELKHA Vol. 15 No.1 April 2023
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/elkha.v15i1.61351

Abstract

Numerical simulation on HIT (Heterostructure with Intrinsic Thin Layer) solar cell using hetero-structure ITO/(p+)a-Si:H/(i)a-Si:H/(n)c-Si/Al solar cell has been done using AFORS-HET (Automate For Simulation of Heterostructure) software. The purpose of this study is to provide validation as well optimization model of solar cell enhanced performances. Data analysis shows a significant increase on solar power generation. An intrinsic thin layer given between the hetero-interface to reduce defect properties on solar cell structure. The optimization using an optimal value of acceptor-donor doping, dangling-bond defects ( ), thin conductive oxide work function ( ), and other input shows a reducing recombination-rates, as a validation Figure of Merits (FOMs) data reach a maximum efficiency value at 23,67% (  = 634,2 mV;  = 51,2 mA/cm2; = 72,91%, this result achieved on peak data such  = 5,2 eV, Na (doping) = 5.0 x 1019 cm-3,  = 1.0 x 1018 cm-3,  (interface defect) = 1.0 x 1010 cm-3. The results obtained from this simulation produce a number of optimum parameters that can be followed up experimentally to obtain better solar cell performances.
Pengaruh Rapat Cacat DB Lapisan (p)a-Si:H Pada Kinerja Sel Surya Struktur p-i-n Dadan Hamdani; Lambang Subagiyo; D Darminto
JIIF (Jurnal Ilmu dan Inovasi Fisika) Vol 6, No 1 (2022)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (782.921 KB) | DOI: 10.24198/jiif.v6i1.35948

Abstract

Validasi numerik terhadap sel surya homojunction berbasis a-Si:H hasil eksperimen secara fisis dianalisis menggunakan perangkat AFORS-HET (Automat FOR Simulation of HETerostructure) dengan meninjau pengaruh cacat dangling-bond (DB) pada lapisan (p)a-Si:H (Ntr) terhadap kinerja sel surya struktur TCO/(p)a-Si:H/(i)a-Si:H/(n)a-Si:H/Ag. Variasi Ntr diberikan sesuai dengan hasil eksperimen antara 5.0 x 1017–5.0 x1019 cm-3/eV yang dioperasikan pada ketebalan lapisan-p berbeda disertai dengan analisis diagram pita energi, kurva karakteristik J-V, profil medan listrik, dan konsentrasi pembawa muatan. Hasil simulasi menunjukkan bahwa sel surya bekerja secara optimum jika nilai parameter Ntr mampu dikontrol untuk nilai < 5.0 x 1018 cm-3/eV, dimana pada kondisi ini efisiensi yang bisa dicapai sekitar 7.68% (VOC = 947.2 mV, JSC = 10.84 mA/cm2; FF = 74.82%) pada ketebalan lapisan-p sekitar 10 nm.
Co-Authors Adrianus Inu Natalisanto Asmaidi As Med Cahyono, Yoyok D Darminto Darminto . Gatut Yudoyono Igor Levi Satriani Lambang Subagiyo Nurjamil Prayogi, Soni Rahmawati Munir Rusnanda, Resky Syaripuddin Yuki N Nasution