Improved Open- Circuit Voltage in ZnO–PbSe Quantum Dot Solar Cells by Understanding and Reducing Losses Arising from the ZnO Conduction Band Tail

@inproceedings{Hoye2014ImprovedOC,
  title={Improved Open- Circuit Voltage in ZnO–PbSe Quantum Dot Solar Cells by Understanding and Reducing Losses Arising from the ZnO Conduction Band Tail},
  author={Robert L. Z. Hoye and Bruno Ehrler and Marcus L. B{\"o}hm and David Mu{\~n}oz-Rojas and Rashid M Altamimi and Ahmed Y. Alyamani and Yana Vaynzof and Aditya Sadhanala and Giorgio Ercolano and Neil C Greenham and Richard H Friend and Judith L MacManus-Driscoll and Kevin P Musselman},
  booktitle={Advanced energy materials},
  year={2014}
}
Colloidal quantum dot solar cells (CQDSCs) are attracting growing attention owing to significant improvements in efficiency. However, even the best depleted-heterojunction CQDSCs currently display open-circuit voltages (VOCs) at least 0.5 V below the voltage corresponding to the bandgap. We find that the tail of states in the conduction band of the metal oxide layer can limit the achievable device efficiency. By continuously tuning the zinc oxide conduction band position via magnesium doping… CONTINUE READING

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