Highly Asymmetric n+-p Heterojunction Quantum-Dot Solar Cells with Significantly Improved Charge-Collection Efficiencies

Min Jae Choi, Sunchuel Kim, Hunhee Lim, Jaesuk Choi, Dong Min Sim, Soonmin Yim, Byung Tae Ahn, Jin Young Kim, Yeon Sik Jung

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

The depletion region width of metal-oxide/quantum-dot (QD) heterojunction solar cells is increased by a new method in which heavily boron-doped n+-ZnO is employed. It is effectively increased in the QD layer by 30% compared to the counterpart with conventional n-ZnO, and provides 41% and 37% improvement of Jsc (16.7 mA cm-2 to 23.5 mA cm-2) and power conversion efficiency (5.52% to 7.55%), respectively.

Original languageEnglish
Pages (from-to)1780-1787
Number of pages8
JournalAdvanced Materials
Volume28
Issue number9
DOIs
StatePublished - 2 Mar 2016

Keywords

  • colloidal quantum dots
  • depletion region width
  • heavily doping
  • metal oxides
  • solar cells

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