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View article: Tannin-Based Natural Dye for DSSC: Polymerization Strategies to Maximize Efficiency
Tannin-Based Natural Dye for DSSC: Polymerization Strategies to Maximize Efficiency Open
Dye-sensitised solar cells (DSSCs) use dyes to absorb sunlight. Tannin is an eco-friendly natural dye alternative. However, the efficiency of tannin-based DSSCs is still low due to the limited number of conjugated double bonds. This study …
View article: Enhancing Students’ Achievement in Chemical Equilibrium Through a Scientific Literacy-Integrated 7E Learning Cycle E-Module
Enhancing Students’ Achievement in Chemical Equilibrium Through a Scientific Literacy-Integrated 7E Learning Cycle E-Module Open
Scientific literacy is crucial in chemistry education, yet PISA results indicate that Indonesian students still struggle with abstract concepts like chemical equilibrium. To address this issue, this study developed a scientific literacy-in…
View article: Influence of ZnO doping on the band gap energy of TiO2 thin films for solar energy applications
Influence of ZnO doping on the band gap energy of TiO2 thin films for solar energy applications Open
This study investigates the optical properties of ZnO-doped TiO2 thin films, focusing on the determination of their band gap energy (Eg) using the Kubelka-Munk method. The reflectance measurements were conducted over a wavelength range of …
View article: Development of the Acid-Base Module Based on Problem Based Learning with Ethnochemisty to Improve Students Science Literacy Ability
Development of the Acid-Base Module Based on Problem Based Learning with Ethnochemisty to Improve Students Science Literacy Ability Open
This study aims to produce an acid-base module based on ethnochemical problem-based learning to improve students' scientific literacy skills, analyze the validity and practicality of the module and analyze the effectiveness of the acid-bas…
View article: Development of IPAS on Matter and its Changes Based on PjBL to Improve the Science Process Skills for Grade E Vocational High School
Development of IPAS on Matter and its Changes Based on PjBL to Improve the Science Process Skills for Grade E Vocational High School Open
The aim study to produce module of IPAS learning based on project based learning to improve the science process skill for grade E SMK and to determine level of validity practicality and effectiveness. The type of research used research and…
View article: Development of Problem-Based Learning Student Worksheet Integrated with Ethnoscience on Acid-Base Material
Development of Problem-Based Learning Student Worksheet Integrated with Ethnoscience on Acid-Base Material Open
This study aims to develop problem-based learning student worksheets integrated with ethnoscience on acid-base materials that are valid and practical. This research uses a development research method (Research and Development) with a 4-D m…
View article: Integrated Green Chemistry Problem-Based Learning Module Development to Improve Science Process Skills Senior High School Students on Basic Chemicals Law
Integrated Green Chemistry Problem-Based Learning Module Development to Improve Science Process Skills Senior High School Students on Basic Chemicals Law Open
The implementation of the independent curriculum at the senior high school level can be an opportunity for educators to develop alternative teaching materials that according to the latest curriculum standards. One alternative teaching mate…
View article: Development of Buffer Solution Students’ Worksheet Based on Problem Based Learning with Ethnochemistry to Improve Students’ Science Literacy Ability
Development of Buffer Solution Students’ Worksheet Based on Problem Based Learning with Ethnochemistry to Improve Students’ Science Literacy Ability Open
Merdeka curriculum emphasizes the ability of students to understand and apply their concepts to solve contextual problems. This research aimed to determine the validity, practicality, and effectivity of buffer solution students’ worksheet …
View article: THE EFFECT OF COATING IN INCREASING THE EFFICIENCY OF SOLAR CELLS BY USING QUERCETIN POLY AS A DYE
THE EFFECT OF COATING IN INCREASING THE EFFICIENCY OF SOLAR CELLS BY USING QUERCETIN POLY AS A DYE Open
The efficiency obtained by using TiO2 semiconductors is still low due to interfacial charge recombination.In this research, two coating methods were carried out, namely doping and bilayer using ZnO as a semiconductor to reduce recombinatio…
View article: TiO2-Ag AND NATURAL DYE CO-PIGMENTED WITH SALICYLIC ACID FOR DYE-SENSITIZED SOLAR CELL (DSSC) APPLICATION
TiO2-Ag AND NATURAL DYE CO-PIGMENTED WITH SALICYLIC ACID FOR DYE-SENSITIZED SOLAR CELL (DSSC) APPLICATION Open
The Dye-Sensitized Solar Cell (DSSC) is still inefficient. Because low efficiency is caused by electron recombination, this study reduced it by the electrodeposition of Ag metal against TiO2. XRD was used to determine the crystal structure…
View article: Development of Problem Based Learning E-modules on Corrosion Materials Class XI SMA/MA
Development of Problem Based Learning E-modules on Corrosion Materials Class XI SMA/MA Open
Problem-based learning-based e-modules are teaching materials in electronic form that support independent learning. This study aims to produce teaching materials in the form of e-modules based on problem based learning on corrosion materia…
View article: Validity and practicality of electrolyte and non-electrolyte solution modules posit on guided inquiry with probing prompting technique for grade X in senior high school
Validity and practicality of electrolyte and non-electrolyte solution modules posit on guided inquiry with probing prompting technique for grade X in senior high school Open
The 2013 curriculum development requires students to be active during the learning process and critical thinking. The using of electrolyte and non electrolyte modules is a way to improve students’ critical thinking skills. This study aims …
View article: Development of Guided Inquiry Learning Module using Promting Probing Technique in Electrolyte and Non- Electrolyte Solution to Increase Thingking Ability Critical Participant in Class X in Senior High School
Development of Guided Inquiry Learning Module using Promting Probing Technique in Electrolyte and Non- Electrolyte Solution to Increase Thingking Ability Critical Participant in Class X in Senior High School Open
The purpose of this to produce guided inquiry inquiry electrolyte and non-electrolyte chemistry chemistry modules with probing techniques and determine the level of validity, practicality and use of modules. This research includes educatio…
View article: Development of Salt Hydrolysis Module Based on guided Inquiry to Increase The Critical Thinking Ablility of 11th Grade High School Students
Development of Salt Hydrolysis Module Based on guided Inquiry to Increase The Critical Thinking Ablility of 11th Grade High School Students Open
This study aims to produce a guided inquirybased salt hydrolysis module to improve students' critical thinking skills by determining the level of validity, practicality and effectiveness of the module. The type of research used is research…
View article: Development of Chemical Learning Module Based Learning Cycle 5E to Improve Students Learning Outcomes in Equilibrium Chemical Content in Class XI MAN 2 Ground Flat
Development of Chemical Learning Module Based Learning Cycle 5E to Improve Students Learning Outcomes in Equilibrium Chemical Content in Class XI MAN 2 Ground Flat Open
This research starts from the problem of the low critical thinking skills of students in Chemistry learning. Chemistry learning is one of the lessons that are difficult, for students to understand. This is due to the fact that many chemica…
View article: Development of Electrolyte and Nonelectrolyte solution Module Based on Science Approach to Science Prompting Probing Technology Class X SMA / MA
Development of Electrolyte and Nonelectrolyte solution Module Based on Science Approach to Science Prompting Probing Technology Class X SMA / MA Open
This study aims to produce electrolyte and non electrolyte solution modules based on a scientific approach with probing prompting techniques and determine the level of validity, practicality and effectiveness of the module. This research i…
View article: Preparation of dye sensitized solar cell (DSSC) using isolated anthocyanin fromfruit sat (melastomamalabathricum l) dicopimented with salicylic acid as dye
Preparation of dye sensitized solar cell (DSSC) using isolated anthocyanin fromfruit sat (melastomamalabathricum l) dicopimented with salicylic acid as dye Open
A study has been conducted on the use of anthocyanin extract from fruits (Melastomamalabthricum L), which was incubated by the addition of salicylic acid as photosensitizer in DSSC solar cells. The objective of this study was to determine …
View article: Improving Students' Critical Thinking Skills through Module Ion Equilibrium in Salt Solution Based on Discovery Learning with Probing Prompting Techniques
Improving Students' Critical Thinking Skills through Module Ion Equilibrium in Salt Solution Based on Discovery Learning with Probing Prompting Techniques Open
This study aims to determine the improvement of student critical thinking based on discovery learning with probing prompting techniques the material of ion equilibrium in salt solution (salt hydrolysis). The research design used was the De…
View article: Improving Critical Thinking Skills through Module Solubility and Solubility Results Based on Discovery Learning with Probing Prompting Techniques at SMAN 1 Pariaman
Improving Critical Thinking Skills through Module Solubility and Solubility Results Based on Discovery Learning with Probing Prompting Techniques at SMAN 1 Pariaman Open
- This study aims to determine the improvement of student critical thinking based on discovery learning using modules that help investigate questions that encourage questions about solubility and solubility results. The research design us…
View article: Developing a discovery learning module on chemical equilibrium to improve critical thinking skills of senior high school students
Developing a discovery learning module on chemical equilibrium to improve critical thinking skills of senior high school students Open
This research was based on an observation which was found that the learning instruction was not yet optimal to train students to think critically. The purpose of this research is to develop a discovery instructional module on chemical equi…
View article: Preparation of Dye Sensitized Solar Cell (DSSC) using anthocyanin color dyes from jengkol shell (Pithecellobium lobatum Benth.) by the gallate acid copigmentation
Preparation of Dye Sensitized Solar Cell (DSSC) using anthocyanin color dyes from jengkol shell (Pithecellobium lobatum Benth.) by the gallate acid copigmentation Open
Research on the preparation of DSSC has been completed by using an anthocyanin dye from jengkol shell that copigmentation with gallate acid. The aim of this research is to know the variation of the duration of TiO2 immersion with the dyes,…
View article: Validity and practicality of salt hydrolysis module based on discovery learning with scientific approach to increase the critical thinking ability of 11<sup>th</sup> grade high school students
Validity and practicality of salt hydrolysis module based on discovery learning with scientific approach to increase the critical thinking ability of 11<sup>th</sup> grade high school students Open
The critical thinking ability and students' learning outcomes could be improved by using module based on discovery learning. This study aimed to develop a salt hydrolysis module based on discovery learning with scientific approach and reve…
View article: Validity and practicality of buffer solution module based on discovery learning with a scientific approach to increase the critical thinking ability of 11<sup>th</sup> grade high school students
Validity and practicality of buffer solution module based on discovery learning with a scientific approach to increase the critical thinking ability of 11<sup>th</sup> grade high school students Open
The results of preliminary research indicate that there is no teaching materials integrated with the suggested learning model for the 2013 curriculum so that students' critical thinking skills can't be developed yet. to improve learning ou…
View article: Validity and practicality of redox reaction module based on discovery learning with scientific approach to increase the critical thinking ability of 10<sup>th</sup> grade high school students
Validity and practicality of redox reaction module based on discovery learning with scientific approach to increase the critical thinking ability of 10<sup>th</sup> grade high school students Open
The module based on discovery learning with a scientific approach has developed to increase students' learning outcomes and critical thinking in redox reaction material. Research and Development (R & D) is applied as this type of research.…
View article: DEVELOPMENT OF PERIODIC TABLE INTERACTIVE INSTRUCTIONAL MULTIMEDIA IN CHEMISTRY LESSON FOR Xth GRADE SMA / MA
DEVELOPMENT OF PERIODIC TABLE INTERACTIVE INSTRUCTIONAL MULTIMEDIA IN CHEMISTRY LESSON FOR Xth GRADE SMA / MA Open
Periodic table is one of chemistry lesson which consist of many consept and need rote. It can couse students forget about this lesson after being learned. Beside that, The periodic table is a bridge of knowledge that becomes the basis and …
View article: Synthesis and Electrical Properties of ZnO-ITO and Al-ITO thin Film by Spin Coating Technique Through Sol Gel Process
Synthesis and Electrical Properties of ZnO-ITO and Al-ITO thin Film by Spin Coating Technique Through Sol Gel Process Open
In this research we has investigated synthesis and electrical properties of ITO (Indium Tin Oxide) thin layers doping Aluminum (Al) and ZnO with spin-coating technique through sol-gel process and calcined at ±550 ºC for 1 hour. Effect of A…
View article: Development of Scientific Approach Based on Discovery Learning Module
Development of Scientific Approach Based on Discovery Learning Module Open
Scientific Approach is a learning process, designed to make the students actively construct their own knowledge through stages of scientific method. The scientific approach in learning process can be done by using learning modules. One of …
View article: Solar Cell Polymer Based Active Ingredients PPV and PCBM
Solar Cell Polymer Based Active Ingredients PPV and PCBM Open
A polymer solar cell is a solar cell based on a polymer bulk heterojunction structure using the method of thin film, which can convert solar energy into electrical energy. Absorption of light is carried by active material layer PPV: PCBM. …
View article: Effect of Chemistry Triangle Oriented Learning Media on Cooperative, Individual and Conventional Method on Chemistry Learning Result
Effect of Chemistry Triangle Oriented Learning Media on Cooperative, Individual and Conventional Method on Chemistry Learning Result Open
The purpose of this study was to see which method are well used with the Chemistry Triangle-oriented learning media. This quasi experimental research involves first grade of senior high school students in six schools namely each two SMA N …
View article: Development of Chemistry Triangle Oriented Module on Topic of Reaction Rate for Senior High School Level Grade XI Chemistry Learning.
Development of Chemistry Triangle Oriented Module on Topic of Reaction Rate for Senior High School Level Grade XI Chemistry Learning. Open
This study aims to produce chemistry triangle oriented module on topic of reaction rate, and to reveal the validity and practicality level of the generated module. The type of research used is EducationalDesign Research (EDR) with developm…