Ion Kinetics in Hybrid Perovskite Optoelectronic Devices

Organic-Inorganic Hybrid Perovskites (OIHPs) have emerged as remarkable alternatives to conventional materials in the renewable energy industry due to their exceptional optoelectronic properties. Recently, OIHPs have disrupted the field of new optoelectronic devices beyond just solar cells and LEDs, extending to supercapacitors, electrochemical devices for water splitting, memory devices, energy storage devices, and detectors. However, ion migration in these materials has been a persistent topic of discussion among the scientific community. This ion migration leads to adverse consequences such as interfacial reactions, material decomposition, and phase segregation, which affect the stability and performance of these devices. External stimuli such as oxygen, moisture, elevated temperature, light illumination, and external bias significantly impair the condition. Numerous studies have been performed to decipher the nature of ion migration and control its behavior according to device requirements, yet the complete picture remains vague. Exploring the recent advances in understanding the kinetics of ion migration in OIHP-based devices is one of the goals of this Research Topic.

This Research Topic aims to investigate the prospects and potential challenges in utilizing OIHPs in optoelectronic devices beyond solar cells and LEDs. The main objectives include understanding the nature of ion migration, employing advanced small perturbation frequency domain techniques such as impedance spectroscopy and intensity modulated photocurrent/photovoltage spectroscopy, and exploring strategies to tune ion migration to reduce material degradation and achieve higher stability while maintaining performance. Specific questions to be answered include: What are the latest insights into ion migration in OIHPs? How can ion migration be controlled to enhance device stability and performance? What are the potential applications of OIHPs in new optoelectronic devices?

To gather further insights into the boundaries of ion migration in OIHP-based optoelectronic devices, we welcome articles addressing, but not limited to, the following themes:

• Ion migration in organic-inorganic hybrid perovskites;
• Advanced spectroscopy techniques such as impedance spectroscopy, intensity modulated photocurrent/photovoltage; spectroscopy, and transient photocurrent/photovoltage spectroscopy;
• Hybrid perovskite-based optoelectronic devices such as solar cells, LEDs, and photodetectors;
• Optoelectronic materials and device applications;
• Correlation between ion migration and anomalous device behavior of perovskite optoelectronics;
• Tuning and mitigating ion migration to improve stability;
• Negative capacitance or chemical inductor in perovskite optoelectronics.

Keywords: Hybrid Perovskite, Ion Kinetics, Ion Migration, Device Stability, Optoelectronic Devices, Solar Cells, Light Emitting Diodes, Photovoltaics, Device Performance

Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.