Escudo de la Universidad Politécnica de Madrid

R&D at IES



The LabCell is the laboratory for Solar Cell manufacturing of IES-UPM. This Lab is equipped with tools especially suited for the fabrication of non-conventional solar cell designs, the so called third-generation solar cells of different kinds. Just to name a few of these devices, at LabCell we routinely produce:

  • Bifacial solar cells
  • III-V multijunction solar cells
  • Intermediate Band solar cells
  • Three-terminal heterojunction bipolar transistor solar cell
  • Thermophotovoltaic cells
  • Silicon based tandem cells
  • Solar cells based on 2D materials
  • Lead-free perovskite solar cells
  • III-V/Si hybrid tandem solar cells
  • Flexible solar cells
  • High efficiency ultrathin solar cells
  • Laser light converters for power-by-light applications


At LabCell we host a number of tools to process the aforementioned devices and the alike or perform any of their manufacturing steps. Just to name a few of the possibilities available we have:

  • Absorber growth and synthesis: we have MOVPE and MBE reactors for the growth of III-V structures, and a complete infrastructure for crystalline silicon solar cells. We also have synthesis equipment for 2D chalcogenides
  • Photolithography: Accurate UV-light based photolithographic process (down to 2 µm) through mask aligner transferring geometric patterns from a photomask on a spin-coated photoresist over semiconductor wafers.
  • Metal thin-film deposition of various layers over samples (specifically for different types of semiconductor, i.e. solar cells contacts):
    • Thermal evaporation: Up to three different materials in a single process.
    • E-Beam Physical Vapour Deposition technology (EBPVD): Up to six different metals.
    • Electroplating: Deposition of gold, nickel and others, such as electroless nickel.
  • Thermal treatments through RTP (Rapid Thermal Process) for semiconductor annealing.
  • Various wet etching processes: selective and non-selective wet mesa etching,
    semiconductor surface preparation, substrate removal, etc.
  • Anti-reflective coating deposition through EBPVD: various dielectric layers can be deposited to form multilayer anti-reflection coatings over samples (semiconductor or others).

A price list for these services can be downloaded here: LabCell Costs 2021


If you are interested on any of these services or want to suggest a different please read the following document: LabCell Access Guide and reach the contact person at the email below.



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