Characterization of a Heterojunction Silicon Solar Cell by Means of Impedance Spectroscopy
Aimaganbetov K. Yerezhep D. Kishkenebayev M. Chuchvaga N. Almas N. Tokmoldin S. Tokmoldin N.
February 2024Multidisciplinary Digital Publishing Institute (MDPI)
Micromachines
2024#15Issue 2
Impedance spectroscopy provides relevant knowledge on the recombination and extraction of photogenerated charge carriers in various types of photovoltaic devices. In particular, this method is of great benefit to the study of crystalline silicon (c-Si)-based solar cells, a market-dominating commercial technology, for example, in terms of the comparison of various types of c-Si devices. This study investigates the dark and light electrophysical characteristics of a heterojunction silicon solar cell fabricated using plasma-enhanced chemical vapor deposition. The measurements are performed at various applied biases, enabling the determination of complex resistance, characteristic time, capacitive response and impurity concentration within the semiconductor junction and to correlate them with the device performance. In addition, the impedance spectra of the studied cell were investigated as a function of temperature. Studies of the frequency and temperature dependences of capacitance do not reveal a significant presence of thermally activated centers of free carrier capture, concomitant with a very small value of the activation energy extracted from an Arrhenius-type analysis. This leads to a conclusion that these centers are likely not impactful on the device operation and efficiency.
capacitance , carrier lifetime , heterojunction silicon solar cells , impedance spectroscopy
Text of the article Перейти на текст статьи
Institute of Physics and Technology, Satbayev University, Almaty, 050032, Kazakhstan
Institute of Energy and Mechanical Engineering, Satbayev University, Almaty, 050040, Kazakhstan
Department of Science and Innovation, Astana IT University, Astana, 01000, Kazakhstan
Silica Metals LLP, Almaty, 050032, Kazakhstan
Paul Drude Institute for Solid State Electronics, Berlin, 10117, Germany
Institute of Physics and Astronomy, University of Potsdam, Potsdam, 14476, Germany
Institute of Physics and Technology
Institute of Energy and Mechanical Engineering
Department of Science and Innovation
Silica Metals LLP
Paul Drude Institute for Solid State Electronics
Institute of Physics and Astronomy
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026