α-CsPbI3 Colloidal Quantum Dots: Synthesis, Photodynamics, and Photovoltaic Applications

Jiantuo Gan, Jingxuan He, Robert L.Z. Hoye, Abdurashid Mavlonov, Fazal Raziq, Judith L. MacManus-Driscoll, Xiaoqiang Wu, Sean Li, Xiaotao Zu, Yiqiang Zhan, Xiaoyong Zhang, Liang Qiao

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

Owing to their defect tolerance and phase stability, α-CsPbI3 colloidal quantum dots (CQDs) with high mobility and 80-95% photoluminescence quantum yield (PLQY) are promising candidates for next-generation photovoltaics (PVs). Recently, α-CsPbI3 CQD PVs have begun to show promising power conversion efficiencies of 13.4%, with the open-circuit voltage approaching the Shockley-Queisser limit. These devices are stable in ambient conditions for several months. However, the short-circuit current density (JSC) of a12 mA/cm2 is low, and the limiting mechanisms are unclear. In this work, we review the strategies for improving the JSC and the effect of interfaces and mobility of the charge transport layers on carrier extraction. We also evaluate strategies to enhance the stability of CsPbI3 CQDs under illumination, as well as methods to elucidate the recombination losses in the CQD PVs and methods to reduce these losses. This work provides routes to achieve efficient and stable α-CsPbI3 CQD PVs.
Original languageEnglish (US)
Pages (from-to)1308-1320
Number of pages13
JournalACS Energy Letters
Volume4
Issue number6
DOIs
StatePublished - Jun 14 2019
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-21

Fingerprint

Dive into the research topics of 'α-CsPbI3 Colloidal Quantum Dots: Synthesis, Photodynamics, and Photovoltaic Applications'. Together they form a unique fingerprint.

Cite this