Vito Bintang Saputra, Tobias Haposan, Dominik Kowal, Pramudita Anindita Prakasa Tanaya, Wulan Chairunisa, Sri Hartati, Lei Zhang, Joko Suwardy, Nandang Mufti, Akmal Zulfi, Lina Jaya Diguna, Ismudiati Puri Handayani, Muhammad Danang Birowosuto, Witri Wahyu Lestari, Arramel Arramel
Cesium halide perovskites (CHPs) are highly regarded for their low toxicity and resistance to degradation, positioning them as promising candidates for optoelectronic devices. Incorporating CHPs into polymer matrices has further enhanced their stability, as the polymer's long molecular chains provide effective protection. Herein, we successfully incorporated CHPs into polystyrene (PS) via electrospinning using a post-encapsulation method. In this study, we examined the optical and electrical characteristics of CHPs–PS nanofibers with PS concentrations of 5 wt% and 25 wt%. The encapsulation of CHPs into the PS matrix enhances the absorption intensity and influences the emitted PL intensity, with higher PS concentrations resulting in reduced intensity due to the complete coverage of CHPs by the PS. In this study, CHPs–PS nanofibers also exhibit photoluminescence (PL) decay with a fast component (τ1) of up to 3 ns and an average decay time τavgof approximately 100 ns. To the best of our knowledge, CHPs–PS nanofibers exhibit a shorter average decay times (τavg) compared to pristine CHPs. The CHPs–PS nanofibers exhibit a tunnelling charge transport mechanism based on the I–V characteristics obtained. The non-linear I–V curves are attributed to the formation of a Schottky barrier, a potential barrier created at the metal–semiconductor interface when the two are connected. The findings of this study provide valuable insights into the development of CHP-incorporated polymer nanofibers, offering promising potential for applications in optoelectronic devices with exceptional optical and electrical characteristics. This journal is © The Royal Society of Chemistry, 2025
Center of Excellence Applied Physics and Chemistry, Nano Center Indonesia, South Tangerang, 15314, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Sebelas Maret, Surakarta, 57126, Indonesia; Łukasiewicz Research Network-PORT Polish Center for Technology Development, Wrocław, 54-066, Poland; Engineering Physics, School of Electrical Engineering, Telkom University, Main Campus, Bandung, 40257, Indonesia; Collaborative STEM Laboratories, Universitas Prasetiya Mulya, Tangerang, 15339, Indonesia; Department of Physics, National University of Singapore, Singapore, 117551, Singapore; Research Center for Quantum Physics, National Research and Innovation Agency (BRIN) South Tangerang, 15314, Indonesia; Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang Malang, 65145, Indonesia; Department of Renewable Energy Engineering, Universitas Prasetiya Mulya Tangerang, 15339, Indonesia; Center of Excellence for Intelligent Sensing-IoT, Research Institute of Sustainable Society, Telkom University, Main Campus, Bandung, 40257, Indonesia
