Kerista Sebayang
University of North Sumatra
65 Papers
65 Citations
Kerista Sebayang is an academic researcher from University of North Sumatra. The author has contributed to research in topics: Sintering & Chemistry. The author has an hindex of 5, co-authored 58 publications.
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Papers
A real-time phytoplankton growth monitoring using TCS-3200 color sensor
Putri Puspita Sari,Tulus Ikhsan Nasution,Kerista Sebayang,Rahmadhani Banurea +3 more
- 31 Mar 2020
TL;DR: The TCS3200 color sensor based plankton growth monitoring has been successfully designed and tested as mentioned in this paper, which is based on changing in green intensity on the media and the test were calibrated with the density of plankton/ml using a Hemocytometer method.
Fabrication of Solution-Processed Methylammonium Lead Iodide PerovskiteSolar Cells and Photodetector
Diana A. Barus,Kerista Sebayang,Junedi Ginting,Riski Titian Ginting +3 more
- 01 Dec 2018
Abstract: Perovskite based on methylammonium lead iodide (MAPbI3) have attracted great attention for the past few years as promising materials for both photovoltaics and photodetector technologies. In this work, we report on the solution-processed of MAPbI3 via spin-coating method prepared at high humidity condition. The compact film of MAPbI3 with grain size of 200 nm and high crystallinity was obtained. Based on the current density –voltage (J-V) measurement, relatively high power conversion efficiency of 11.3% of PSCs can be achieved when processing the MAPbI3 film at high humidity. In addition, the calculated detectivity and responsivity of perovskite photodetector can reached up to 2 A W-1 and 2 x 1012 Jones at wavelength of 500 nm with rapid response time of 2 ms.This finding shows that MAPbI3 processed at high humidity can achieve both high photovoltaic and photodetector performance.
Cyclic Oxidation Resistance of MoSi2 Added FeCrAlTiY Coatings on ST41 Steel at 700oC Prepared by a Flame Spraying Technique
Januaris Pane,Dedi Holden Simbolon,H. Izzudin,A Afandi,Bambang Hermanto,Kerista Sebayang,Syahrul Humaidi,Marhaposan Situmorang,Toto Sudiro +8 more
TL;DR: In this article , the use of carbon steel that previously has been used in boiler fabrication has been investigated in the context of advanced power generation, which will be operated at higher temperatures and pressure to achieve higher efficiency and reduce CO2 emission.
Shorting And Drying Technology Unit For Improving The Effectiveness Of Black Onion Process
Kerista Sebayang,Amir Hamzah Siregar,Herty Afrina Sianturi,Erni Mirsan +3 more
- 15 Mar 2021
TL;DR: It was found from the literature study by the Abdimas team of USU that there are 3 parameters that affect the processing of onions, namely garlic which is sensitive to temperature, humidity and exposure period of temperature and humidity.