2020年第67回応用物理学会春季学術講演会

講演情報

一般セッション(口頭講演)

12 有機分子・バイオエレクトロニクス » 12.5 有機太陽電池

[12p-A402-1~17] 12.5 有機太陽電池

2020年3月12日(木) 13:15 〜 18:00 A402 (6-402)

但馬 敬介(理研)、吉田 弘幸(千葉大)、伊澤 誠一郎(分子研)

14:30 〜 14:45

[12p-A402-6] Morphology of Spin-coated PEDOT:PSS on Neutral Beam etched Silicon nanopillar surface for Hybrid Solar Cells

〇(M2)Aditya Saha1、Daisuke Ohori1、Susumu Toko1、Sou Takeuchi1、Seiji Samukawa1,2 (1.IFS, Tohoku Univ.、2.AIMR, Tohoku Univ.)

キーワード:hybrid solar cell, PEDOT:PSS, nanostructured solar cell

Module cost accounts for around 30 per cent of the price of current cells at around 40,000 yen/kWh. The high vacuum and high-temperature production techniques employed in commercial Si-based solar cells set a limit to lowering prices. Organic-silicon hybrid solar cells can take advantage of low-cost processing techniques of conjugated polymers and the optoelectrical properties of Si to reduce the module cost while maintaining high performance. Achieving parity in efficiency with current inorganic solar cells has the potential to significantly drop the price of solar cells. Poly (3,4 ethylene dioxythiophene): poly styrenesulfonate (PEDOT:PSS) has been widely used due to its high conductivity and thermal stability. Previous attempts at making micro or nanostructured surfaces have faced challenges in penetration of PEDOT:PSS and formation recombination sites due to defects. We hope to improve effective contact area, charge separation and photon management of PEDOT:PSS/Si hybrid solar cells through the formation of an even thin film of PEDOT:PSS around silicon nanopillars (SiNP) etched by a damage free neutral beam etching (NBE) process. The NBE process will be able to reduce the number of surface recombination sites that tend to affect the Voc of plasma etched nanostructures while improving the Jsc. This presentation describes the first set of trials in our project.