Recent Progress in Perovskite Materials for Solar Cells and Optoelectronic Devices

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Materials for Energy Applications".

Deadline for manuscript submissions: 10 October 2026 | Viewed by 639

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Department of Chemistry, Pukyong National University, Busan 48513, South Korea
Interests: physical inorganic chemistry; optical materials; perovskite quantum dots; material structure; material characterization
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Special Issue Information

Dear Colleagues,

Metal halide perovskites have attracted tremendous attention as next-generation semiconductors for solar cells and optoelectronic devices. Their remarkable properties, including tunable bandgaps, high absorption coefficients, and long carrier diffusion lengths, have enabled rapid progress in photovoltaics, light-emitting diodes, lasers, and photodetectors. At the same time, important challenges remain, such as phase stability, environmental durability, and scalable fabrication.

This Special Issue, “Recent Progress in Perovskite Materials for Solar Cells and Optoelectronic Devices”, aims to provide a platform for presenting the latest advances in perovskite research, covering both fundamental studies and device applications. Topics of interest include synthesis and compositional engineering, stability enhancement strategies, and advanced optical and structural characterization methods such as XPS, XRD, TEM, Raman spectroscopy, and time-resolved spectroscopy, as well as novel device designs.

Dr. Myeongkee Park
Guest Editor

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Keywords

  • perovskite materials
  • solar cells
  • optoelectronic devices
  • optical characterization
  • electrochemical characterization
  • stability enhancement
  • device architecture
  • organic, halogen, and metal compositional engineering

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Published Papers (1 paper)

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Research

19 pages, 3751 KB  
Article
Iminodiacetic Acid-Modified TiO2 Electron Transport Layers for Efficient and Stable CsPbI3−xBrx Perovskite Solar Cells
by Genyang Li, Fanghui Zhang, Xiao Wang, Chunyang Chen and Kaiyuan Gou
Crystals 2026, 16(3), 160; https://doi.org/10.3390/cryst16030160 - 26 Feb 2026
Viewed by 344
Abstract
The efficiency of perovskite solar cells (PSCs) is mainly determined by their electron transport layer (ETL). In this work, we present a facile and efficient strategy to incorporate iminodiacetic acid (IDA) as a cost-effective, multifunctional dopant into hydrothermally synthesized TiO2 ETLs. This [...] Read more.
The efficiency of perovskite solar cells (PSCs) is mainly determined by their electron transport layer (ETL). In this work, we present a facile and efficient strategy to incorporate iminodiacetic acid (IDA) as a cost-effective, multifunctional dopant into hydrothermally synthesized TiO2 ETLs. This modification enables holistic defect passivation in the bulk TiO2, on its surface, and at the TiO2/perovskite interface, thereby significantly improving device performance. In particular, the dicarboxyl groups (-COOH) of the IDA molecule coordinate with Ti ions and oxygen vacancies at the TiO2 surface, effectively passivate the deep level traps, and improve the carrier (electron) mobility. At the same time, the imino groups (-NH-) assist in forming a thick and highly crystalline CsPbI3−xBrx perovskite film by coordinating to free Pb2+. Consequently, the best-performing device (5 mg/mL IDA) achieves a peak PCE of 12.16%, representing a relative enhancement of 38.9% compared to the control device (8.78%). The modified devices show significantly lower hysteresis (from 0.172 to 0.055) and better stability with more than 82% retention in the original performance after being stored in ambient air (25–30 °C, 20–30% RH) for 60 days. The present study offers a low-cost and industrially compatible technological pathway to produce efficient inorganic PSCs through molecular interfacial engineering. Full article
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