Development of a Handmade Conductivity Measurement Device for a Thin-Film Semiconductor and Its Application to Polypyrrole
ការអភិវឌ្ឍឧបករណ៍វាស់ចរន្តអគ្គិសនីធ្វើដោយដៃសម្រាប់សារធាតុពាក់កណ្តាលចម្លងស្រទាប់ស្តើង និងការអនុវត្តលើប៉ូលីភីរ៉ុល (Polypyrrole)
Set Seng, Shinpei Tomita, Yoshihiko Inada, Masakazu Kita
Journal of Chemical Education91(11)1971–19752014
The four-point probe method is the standard technique for precisely measuring the electrical conductivity of semiconductor thin films such as polypyrrole (Ppy); however, commercial probe stations and electrometers are typically too expensive or complex for classroom laboratory instruction. In this work, an inexpensive, convenient, handmade conductivity measurement device was developed and tested for educational use. The device enables students to reliably determine the electrical conductivity of polypyrrole thin films, providing practical hands-on experience in semiconductor materials and polymer chemistry in high school and introductory undergraduate settings.