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The role of the hol...
The role of the hole-transport layer in perovskite solar cells - reducing recombination and increasing absorption
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- Tress, Wolfgang (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan,Swiss Federal Institute Technology EPFL, Switzerland
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- Marinova, Nevena (författare)
- Swiss Federal Institute Technology EPFL, Switzerland
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- Inganäs, Olle (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Nazeeruddin, Mohammad K. (författare)
- Swiss Federal Institute Technology EPFL, Switzerland
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- Zakeeruddin, Shaik M. (författare)
- Swiss Federal Institute Technology EPFL, Switzerland
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- Graetzel, Michael (författare)
- Swiss Federal Institute Technology EPFL, Switzerland
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(creator_code:org_t)
- IEEE, 2014
- 2014
- Engelska.
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Ingår i: 2014 IEEE 40TH PHOTOVOLTAIC SPECIALIST CONFERENCE (PVSC). - : IEEE. - 9781479943982 ; , s. 1563-1566
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The role of the hole-transport layer (HTL) in CH3NH3PbI3 perovskite solar cells is investigated. It is found that it mainly serves three purposes: First, deposited prior to the gold electrode, it avoids direct contact of the metal electrode with the meso porous TiO2-perovskite layer, and therefore increases the selectivity of the contact. This reduces recombination as evident from an increased open-circuit voltage and a higher luminescence efficiency. Second, the HTL increases the internal quantum efficiency independent of applied voltage and illumination wavelength by reducing (diffusion) losses of charges. Third, due to a smoothing of the TiO2-perovskite mesoscopic layer the HTL increases the reflectivity of the gold electrode, allowing for a second path of the light through the absorber. Both effects result in an enhancement of the short-circuit current density.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- solar cell; perovskite; recombination; hole transport layer; luminescence; internal quantum efficiency; incident-photon-to-electron conversion efficiency
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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