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Perovskite solar cells: surface, interface and materials aspects

The Symposium C is devoted to the presentation of original contributions on fundamental research at the surface and interface, and materials science engineering of the perovskite solar cells. Both theoretical and experimental studies which focus on the preparation or understanding of materials for perovskite solar cells are relevant.


The performance of perovskite solar cells, critically depends on the interfaces between the individual layers. For instance, efficient generation of charges, extraction, and transport with minimum recombination through interlayer interfaces is crucial to attain high-efficiency solar cell devices. During the overlayer formation many unexpected reactions may occur that in effect may change the expected energy bands positions and thus the charge transport properties across the layers. The interfacial reactions often lead to the degradation of the perovskite solar cells and hence to the performance and stability of these devices. Besides that, the perovskite film itself can be grown as an intrinsic, n-type or/and p-type material depending on the used substrate. Most of the preparation methods like spin-coating, co-evaporation, vapor-assisted deposition, etc. developed to prepare perovskite generate films with polycrystalline grains. The adjacent grains may assume different crystal orientations and/or have different chemical compositions, which impacts charge excitation and dynamics and thereby the overall solar cell performance. The unbalanced charge accumulation or depletion between grain boundaries and grain interiors can cause band bending, which affects the separation of photoexcited electron−hole pairs and charge carrier transport across the grain interfaces formed between grains. Therefore, it is crucial to investigate the correlation between local electronic properties and local morphologies. 

The aim of this Symposium is to gather together all researchers involved in the investigation of the (new) perovskite materials for photovoltaic applications and to provide a discussion forum for them.   Papers related to all aspects of the fundamental properties of the perovskite materials and devices, i.e. new materials for stable and efficient perovskite solar cells, laboratory- and synchrotron-based characterization of the surface and interfaces in the perovskite solar cell stacks, perovskite-inspired materials, application of hybrid perovskites in LED and photoelectrochemical water splitting devices, non-PV applications of hybrid perovskite films, new deposition techniques for industrialization of perovskite solar cells, to name a few, are invited.

Hot topics to be covered by the symposium:

  • Ex-situ, in-situ and in-operando studies of the perovskite materials and devices
  • New materials and interfaces for stable and efficient photovoltaics
  • Low-temperature processes for perovskite devices fabrication 
  • Perovskites in tandem with other materials
  • Perovskites for non-photovoltaics (LED, water splitting) applications
  • Perovskite-inspired materials
  • Atomic layer deposition (ALD) for perovskite-based devices
  • Engineering transparent conducting oxides (TCOs) for perovskite-based devices 
  • Development of flexible perovskite-based photovoltaics
  • Modeling of perovskite materials and solar cells  
  • 2D and 3D perovskites

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Symposium organizers
Chittaranjan DASTechnical University Darmstadt

Otto-Berndt-Str. 3, 64287 Darmstadt, Germany
Derya BARAN BRYANTKing Abdullah University of Science and Technology (KAUST)

KAUST Solar Center 23955, Thuwal, Saudi Arabia
MAIN ORGANIZER: Malgorzata KOT (SOWINSKA)BTU Cottbus-Senftenberg

Konrad-Wachsmann-Allee 17, 03046 Cottbus, Germany

+49 (0) 355 69 2972
Michael SALIBAUniversity of Fribourg

Adolphe Merkle Institute, Chemin des Verdiers 4, CH-1700 Fribourg