Doping Colloidal Quantum Dot Materials and Devices for Photovoltaics

Lingju Meng*, Xihua Wang

*Corresponding author for this work

Research output: Contribution to journalReview Articlepeer-review

6 Citations (Scopus)
228 Downloads (Pure)

Abstract

Colloidal semiconductor nanocrystals have generated tremendous interest because of their solution processability and robust tunability. Among such nanocrystals, the colloidal quantum dot (CQD) draws the most attention for its well-known quantum size effects. In the last decade, applications of CQDs have been booming in electronics and optoelectronics, especially in photo-voltaics. Electronically doped semiconductors are critical in the fabrication of solar cells, because carefully designed band structures are able to promote efficient charge extraction. Unlike conventional semiconductors, diffusion and ion implantation technologies are not suitable for doping CQDs. Therefore, researchers have creatively developed alternative doping methods for CQD materials and devices. In order to provide a state-of-the-art summary and comprehensive understanding to this research community, we focused on various doping techniques and their applications for photovoltaics and demystify them from different perspectives. By analyzing two classes of CQDs, lead chalcogenide CQDs and perovskite CQDs, we compared different working scenarios of each technique, summarized the development in this field, and raised our own future perspectives.

Original languageEnglish
Article number2458
Number of pages29
JournalEnergies
Volume15
Issue number7
Early online date27 Mar 2022
DOIs
Publication statusPublished - 1 Apr 2022
MoE publication typeA2 Review article, Literature review, Systematic review

Keywords

  • doping
  • lead chalcogenide
  • perovskite
  • photovoltaics
  • quantum dot

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