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Journal : Variabel

A Simple Photovoltaic Experiment for Measuring Planck’s Constant Using Colour Lasers Nuri, Nuri; Marwoto, Putut; Nugroho, Sunyoto Eko; Yulianto, Agus; Subali, Bambang; Sulhadi, Sulhadi; Sumarli, Sumarli
Variabel Vol 8, No 2 (2025): OCTOBER 2025
Publisher : STKIP Singkawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26737/var.v8i2.8664

Abstract

The photovoltaic experiment provided a simple, affordable method to determine Planck’s constant through empirical learning. This experiment allowed students to present concrete data using easily available, low-cost materials. The experiment utilised a photovoltaic method, employing a simple, self-designed setup that used three laser pointers with wavelengths of 650nm (red), 535nm (green), and 405nm (blue) as independent variables. A 6V, 1W mini solar cell was used as the target, while the speed of light and electron charge were treated as control variables. The laser pointers were powered by a 3V battery. The data were analysed by plotting the relationship between 1/λ (inverse wavelength) and the measured voltage as the dependent variable. A linear regression analysis was performed to obtain the gradient, which was used to calculate Planck’s constant. The experiment yielded a calculated Planck’s constant of 7.09×10-35Js, with a deviation of 5.69 x 10-34Js, resulting in a relative error of 8.89%. This relative error could be attributed to several factors, including refraction effects caused by the glass layer and adhesive used to protect the semiconductor plate of the solar cell, as well as discrepancies between the actual wavelengths of the laser beams and the labelled wavelengths on the laser pointers.
Co-Authors - Muqoyyanah - Sugianto A. Rinto A. Rusilowati Achmad Sopyan, Achmad Agus Yulianto Ali Najib, Ali Ani Lestari Ani Rusilowati Arief Yulianto Arif Widiyatmoko, Arif Azimi Azimi, Azimi Bambang Subali Budi Astuti Budi Naini Mindyarto, Budi Naini Darsono, Teguh Delvita Puspitasari DENI SETIAWAN Dian Wahid Hermawan, Dian Wahid Didik Aryanto Djoko Widodo Durrotun Nafisah DWI YULIANTI E. Wibowo Edy Cahyono Effendy, Suhardi Fatiatun, Fatiatun Fianti Fianti, Fianti Frilisa Dliyaul Haya, Frilisa Dliyaul Hadi Susanto Hartono Hartono Huda, Alimul Huda, C. Imron Imron, Imron Iwan junaedi jalaluddin, wahyu Kartono , Kasmadi Imam Supardi Lele, David Moto Liana, Yeni Rima Lucky Zaehir Maulana M. A.N. Said, M. A.N. M. I. Savitri, M. I. M. P. Aji, M. P. Mahardika Prasetya Aji Masrukan Masrukan Masturi Masturi Maulana, Vicky Ainul Hayya Maulani, Nofrina MI Savitri MP Aji Muammar, Ahmad Nurul Mudhofir, Faiz Mudhofir, Faiz Mugi Lestari, Mugi Muh. Afis Nur Said, Muh. Afis Nur Mulyati, Restina Muji Mushthofa, Zayyinul Muttaqin, Wahyu Eka Putra N. Hindarto N. Rosita, N. Nathan Hindarto Nita Rosita, Nita novita sari, dian Noviyatun, Siti NUR HAMID Nur Khoiri Nur Khoiri Nuri Nuri Nursidhi, Nursidhi Octafia, Dwiana P. A. Wiguna, P. A. P. Marwoto Perwitasari, A. D. Pradita Ajeng Wiguna, Pradita Ajeng Purwaningtyas, S. A. Puspito, Dhimas Rinda Adi Putra, Ngurah Made Dharma Putut Marwoto Rahma, Alina Dwi Rahmawan Wicaksono Reza Faizal, Reza Rima Oktafianto, Wakid Rofikhatul Ula, Wahyu Rikha Rohim, Ahmad Minanur S. Susanto, S. Saeful Rohman Sigit Saptono Siti Aisyah Sri Susilogati Sumarti Sri Wahyuni subay, Resvia Suciningtyas Suciningtyas, Suciningtyas Sugianto - Sugianto Sugianto Suharto Linuwih Sumarli Sumarli, Sumarli Sunyoto Eko Nugroho, Sunyoto Eko Supriyadi Supriyadi Susanto Susanto Susanto Susanto, Wawan Sutikno Sutikno Suwito Eko Pramono Tulus Prihadi, Tulus Utami, Friska Dhian Veithzal Rivai Zainal Waluyo, Akhmad Ardi Wicaksono, A. G. C. Wiyanto, W. Wulandari, Lili Yunawati, Rini Yunita, Elok Arina Zhafirah, Azizah