All-inorganic perovskite quantum dot light-emitting memories

Meng Cheng Yen, Chia Jung Lee, Kang Hsiang Liu, Yi Peng, Junfu Leng, Tzu Hsuan Chang, Chun Chieh Chang*, Kaoru Tamada, Ya Ju Lee

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

摘要

Field-induced ionic motions in all-inorganic CsPbBr3 perovskite quantum dots (QDs) strongly dictate not only their electro-optical characteristics but also the ultimate optoelectronic device performance. Here, we show that the functionality of a single Ag/CsPbBr3/ITO device can be actively switched on a sub-millisecond scale from a resistive random-access memory (RRAM) to a light-emitting electrochemical cell (LEC), or vice versa, by simply modulating its bias polarity. We then realize for the first time a fast, all-perovskite light-emitting memory (LEM) operating at 5 kHz by pairing such two identical devices in series, in which one functions as an RRAM to electrically read the encoded data while the other simultaneously as an LEC for a parallel, non-contact optical reading. We further show that the digital status of the LEM can be perceived in real time from its emission color. Our work opens up a completely new horizon for more advanced all-inorganic perovskite optoelectronic technologies.

原文英語
文章編號4460
期刊Nature Communications
12
發行號1
DOIs
出版狀態已發佈 - 2021 十二月

ASJC Scopus subject areas

  • 化學 (全部)
  • 生物化學、遺傳與分子生物學 (全部)
  • 物理與天文學 (全部)

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