Organic Semiconductors: Materials, Microdevices, and Integrated Systems

Dear Colleagues,

We are pleased to invite you to submit your recent research to this Special Issue on “Organic Semiconductors: Materials, Microdevices, and Integrated Systems” which will be published in Micromachines.

Organic semiconductors have emerged as a transformative class of materials within the broader field of Materials Science and Organic Electronics, offering unique opportunities for the development of lightweight, flexible, and cost-effective electronic and optoelectronic systems. Unlike conventional inorganic semiconductors, organic semiconducting materials comprising small molecules, polymers, and hybrid systems, exhibit tunable electronic properties through molecular design, enabling precise control over charge transport, optical absorption, and emission characteristics. Over the past two decades, significant progress has been achieved in understanding the fundamental mechanisms governing charge transport, exciton dynamics, and interfacial phenomena in organic semiconductors. These advances have led to the rapid development of high-performance devices such as organic field-effect transistors (OFETs), organic photovoltaics (OPVs), and organic light-emitting diodes (OLEDs), demonstrating their potential for applications in flexible displays, wearable electronics, bio-integrated devices, and large-area sensing platforms. At the microdevice level, the integration of organic semiconductors into functional architectures has enabled the realization of compact, efficient, and multifunctional devices. Innovations in device engineering, including heterostructure design, interface optimization, and nanoscale patterning, have significantly improved device stability, efficiency, and operational lifetime. Furthermore, the convergence of organic semiconductors with emerging technologies such as printed electronics, stretchable systems, and hybrid organic–inorganic platforms has opened new avenues for next-generation integrated systems.

This Special Issue “Organic Semiconductors: Materials, Microdevices, and Integrated Systems” aims to bring together cutting-edge research that spans fundamental material development, device physics, and system-level integration. By highlighting recent breakthroughs and emerging trends, this collection seeks to provide a comprehensive platform for advancing the science and technology of organic semiconductors and to foster interdisciplinary collaboration across chemistry, physics, engineering, and materials sciences.

In this Special Issue, original research articles, and reviews (mini or full length reviews) and communications are welcome. Research areas may include (but are not limited to) the following:

• Modelling and fabrication of microdevices using organic semiconductors;
• Integrated flexible electronic devices for sensing and wearable technology;
• Photodetectors, organic field-effect transistors, organic light-emitting diodes, and organic photovoltaics;
• Electronic processes in organic semiconductors;
• Delayed fluorescent processes in organic materials;
• Organic semiconductors as transport layer materials;
• Heat and electronic transport modelling in semiconducting devices;
• Energy conversion and thermodynamic process in organic semiconductors;
• Photothermal and mechano-optical effects in nanoclusters.

We look forward to receiving your contributions.

Dr. Dharmendra Pratap Singh
Dr. Paweł Ziółkowski
Prof. Dr. Pushpendra Kumar
Dr. Ajit Kumar Katiyar
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• microdevices using organic semiconductors
• integrated flexible electronic devices
• photodetectors
• electronic processes
• organic field-effect transistors
• organic light-emitting diodes
• delayed fluorescent processes in organic materials
• organic transport layer materials
• organic photovoltaics
• heat and electronic transport modelling in semiconducting devices
• energy conversion
• thermodynamic process in organic semiconductors
• photothermal and mechano-optical effects in nanoclusters
• modelling of microdevices