Boosting radiation of stacked halide layer for perovskite solar cells with efficiency over 25%

Min Ju Jeong, Chan Su Moon, Seungmin Lee, Jeong Min Im, Mun Young Woo, Jun Hyeok Lee, Hyeonah Cho, Soo Woong Jeon, Jun Hong Noh

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Although halide perovskite solar cells (PSCs) have shown tremendous progress in device performance, state-of-the-art PSCs are still far below the theoretical efficiency. To further reach the theoretical limit, it is essentially required to maximize radiative recombination in the full device stack. Here, we report that boosting radiation in the full device stack is an effective way for reaching the radiative limit of power conversion efficiency (PCE) by demonstrating the correlation between external photoluminescence quantum efficiency (PLQE) of the full device stack and PCE of the devices. We found that controlling the bottom charge transporting layer (CTL)/perovskite interface is a main factor to boost radiation in the full device stack. The device combined with the interface and bulk engineering exhibited an improved external PLQE of 15.57%, resulting in an improved PCE of over 25% (certified 25.06%) and almost 95% achievement rate of the radiative limit open-circuit voltage (Voc).

Original languageEnglish
Pages (from-to)112-127
Number of pages16
JournalJoule
Volume7
Issue number1
DOIs
Publication statusPublished - 2023 Jan 18

Bibliographical note

Publisher Copyright:
© 2022 Elsevier Inc.

Keywords

  • PLQE
  • high performance
  • perovskite
  • radiation
  • solar cell

ASJC Scopus subject areas

  • General Energy

Fingerprint

Dive into the research topics of 'Boosting radiation of stacked halide layer for perovskite solar cells with efficiency over 25%'. Together they form a unique fingerprint.

Cite this