Hydrogenated amorphous silicon carbide (a-SiC:H) films were prepared using a home-built plasma-enhanced chemical vapor deposition (PECVD) system with different flow rate ratios of methane (CH 4 ) and silane (SiH 4 ) gases. Fourier-transform infrared (FTIR) spectra indicate multiple bonding configurations consisting of wagging, bending and stretching modes of silicon, hydrogen and carbon atoms with a steady depletion of Si-H wagging and stretching modes as the gas flow rate ratio increases. Micro-Raman spectra show evidence of amorphous silicon structure in all the films. Only the a-SiC:H film prepared at the highest CH 4 to SiH 4 gas flow rate ratio shows the existence of the Si-C vibrational mode. All the samples prepared show room-temperature luminescence with two peaks centered at 467 and 698 nm. The photoluminescence (PL) intensity increases as the CH 4 to SiH 4 gas flow rate ratio increases but a reduction in intensity is observed for a high CH 4 to SiH 4 gas flow rate ratio. a-SiC:H films with higher optical energy gaps were obtained by allowing the gases to flow at higher CH 4 to SiH 4 gas flow rate ratios.
The aim of this investigation is to comprehend all forms of internet-based dealings within the framework of Islamic Jurisprudence. This exploration is a qualitative and descriptive inquiry conducted through a literature review, utilizing written sources such as scholarly journals, reference books, literature, encyclopedias, scientific articles, scientific papers, and other pertinent sources related to the research subject. The research object is text or writing that elucidates various types of online transactions that are presently prevalent in the current technological age, particularly in Indonesia. The outcome of this analysis suggests that Islam authorizes online transactions provided they adhere to predetermined requirements and do not breach Islamic law. Currently, technologi advancements enable transactions to be conducted effortlessly and expeditiously online, as long as there is a network or internet connection available, which is the principal prerequisite for auxiliary devices in online transactions.In the contemporary digital age, modern technology such as computers or mobile phones can be employed as a medium for processing online transactions. Numerous transactions are carried out through cyberspace (online or via the internet), allowing the involved parties to transact without any restrictions of space and time, whether conducted by individuals or corporations or companies that involve more than one person. In general, a transaction can be interpreted as an agreement made by two or more individuals to accomplish something within a specific duration of time, with several other conditions agreed upon by both parties. Therefore, online transactions in the perspective of Islamic law can be regarded as transactions that have specific provisions that must be agreed upon by the parties involved in the transactionAbstrakTujuan dari penelitian ini adalah untuk memahami segala jenis transaksi online dalam konteks hukum Islam. Penelitian ini merupakan studi deskriptif kualitatif yang dilakukan melalui kajian literatur, dengan menggunakan sumber-sumber tertulis seperti jurnal ilmiah, buku referensi, literatur, ensiklopedi, artikel ilmiah, karya ilmiah, dan sumber lain yang relevan terkait dengan objek penelitian. Objek penelitian ini adalah teks atau tulisan yang menjelaskan berbagai macam transaksi online yang sedang populer di era teknologi saat ini, terutama di Indonesia. Hasil dari penelitian ini menunjukkan bahwa Islam mengizinkan transaksi online selama memenuhi persyaratan yang telah ditetapkan dan tidak melanggar hukum Islam. Saat ini, kemajuan teknologi memungkinkan transaksi dilakukan secara online dengan mudah dan cepat, selama tersedia jaringan atau koneksi internet yang menjadi syarat utama alat bantu dalam transaksi online.Era digital saat ini, teknologi modern seperti komputer atau telepon genggam dapat dimanfaatkan sebagai alat bantu dalam proses transaksi online. Ada banyak transaksi yang dilakukan melalui dunia maya (online atau via internet), sehingga pihak yang melakukan transaksi tidak terbatas oleh ruang dan waktu, baik itu dilakukan oleh individu maupun oleh korporasi atau perusahaan yang melibatkan lebih dari satu orang. Secara umum, transaksi dapat diartikan sebagai sebuah kesepakatan yang dilakukan oleh dua orang atau lebih untuk menyelesaikan suatu hal dalam jangka waktu tertentu dengan beberapa syarat lain yang disepakati oleh kedua belah pihak. Oleh karena itu, transaksi online dalam perspektif hukum Islam dapat dianggap sebagai transaksi yang memiliki ketentuan khusus yang harus disepakati oleh pihak-pihak yang terlibat dalam transaksi tersebut.
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