Very Robust Spray-Synthesized CsPbI3 Quantum Emitters with Ultrahigh Room-Temperature Cavity-Free Brightness and Self-Healing Ability
Although colloidal lead halide perovskite quantum dots (PQDs) exhibit desirable emitter characteristics with high quantum yields and narrow bandwidths, instability has limited their applications in devices. In this paper, we describe spray-synthesized CsPbI3 PQD quantum emitters displaying strong photon antibunching and high brightness at room temperature and stable performance under continuous excitation with a high-intensity laser for more than 24 h. Our PQDs provided high single-photon emission rates, exceeding 9 × 106 count/s, after excluding multiexciton emissions and strong photon antibunching, as confirmed by low values of the second-order correlation function g(2)(0) (reaching 0.021 and 0.061 for the best and average PQD performance, respectively). With such high brightness and stability, we applied our PQDs as quantum random number generators, which demonstrably passed all of the National Institute of Standards and Technology's randomness tests. Intriguingly, all of the PQDs exhibited self-healing behavior and restored their PL intensities to greater than half of their initial values after excitation at extremely high intensity. Half of the PQDs even recovered almost all of their initial PL intensity. The robust properties of these spray-synthesized PQDs resulted from high crystallinity and good ligand encapsulation. Our results suggest that spray-synthesized PQDs have great potential for use in future quantum technologies (e.g., quantum communication, quantum cryptography, and quantum computing).
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2021 |
|---|---|
| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:15 |
|---|---|
| Enthalten in: |
ACS nano - 15(2021), 7 vom: 27. Juli, Seite 11358-11368 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Hsu, Bo-Wei [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
Antibunching |
|---|
| Anmerkungen: |
Date Revised 09.11.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1021/acsnano.1c00733 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM322863902 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM322863902 | ||
| 003 | DE-627 | ||
| 005 | 20231225182938.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231225s2021 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1021/acsnano.1c00733 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1076.xml |
| 035 | |a (DE-627)NLM322863902 | ||
| 035 | |a (NLM)33729770 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Hsu, Bo-Wei |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Very Robust Spray-Synthesized CsPbI3 Quantum Emitters with Ultrahigh Room-Temperature Cavity-Free Brightness and Self-Healing Ability |
| 264 | 1 | |c 2021 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Revised 09.11.2022 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Although colloidal lead halide perovskite quantum dots (PQDs) exhibit desirable emitter characteristics with high quantum yields and narrow bandwidths, instability has limited their applications in devices. In this paper, we describe spray-synthesized CsPbI3 PQD quantum emitters displaying strong photon antibunching and high brightness at room temperature and stable performance under continuous excitation with a high-intensity laser for more than 24 h. Our PQDs provided high single-photon emission rates, exceeding 9 × 106 count/s, after excluding multiexciton emissions and strong photon antibunching, as confirmed by low values of the second-order correlation function g(2)(0) (reaching 0.021 and 0.061 for the best and average PQD performance, respectively). With such high brightness and stability, we applied our PQDs as quantum random number generators, which demonstrably passed all of the National Institute of Standards and Technology's randomness tests. Intriguingly, all of the PQDs exhibited self-healing behavior and restored their PL intensities to greater than half of their initial values after excitation at extremely high intensity. Half of the PQDs even recovered almost all of their initial PL intensity. The robust properties of these spray-synthesized PQDs resulted from high crystallinity and good ligand encapsulation. Our results suggest that spray-synthesized PQDs have great potential for use in future quantum technologies (e.g., quantum communication, quantum cryptography, and quantum computing) | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a antibunching | |
| 650 | 4 | |a brightness | |
| 650 | 4 | |a perovskite quantum dot | |
| 650 | 4 | |a quantum emitter | |
| 650 | 4 | |a self-healing | |
| 700 | 1 | |a Chuang, Yung-Tang |e verfasserin |4 aut | |
| 700 | 1 | |a Cheng, Chun-Yuan |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Chien-Yu |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Yen-Ju |e verfasserin |4 aut | |
| 700 | 1 | |a Brumberg, Alexandra |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Lin |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Yu-Sheng |e verfasserin |4 aut | |
| 700 | 1 | |a Schaller, Richard D |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Lih-J |e verfasserin |4 aut | |
| 700 | 1 | |a Chuu, Chih-Sung |e verfasserin |4 aut | |
| 700 | 1 | |a Lin, Hao-Wu |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t ACS nano |d 2007 |g 15(2021), 7 vom: 27. Juli, Seite 11358-11368 |w (DE-627)NLM18248100X |x 1936-086X |7 nnns |
| 773 | 1 | 8 | |g volume:15 |g year:2021 |g number:7 |g day:27 |g month:07 |g pages:11358-11368 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1021/acsnano.1c00733 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 15 |j 2021 |e 7 |b 27 |c 07 |h 11358-11368 | ||