Thermal Management Enables Bright and Stable Perovskite Light-Emitting Diodes
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim..
The performance of lead-halide perovskite light-emitting diodes (LEDs) has increased rapidly in recent years. However, most reports feature devices operated at relatively small current densities (<500 mA cm-2 ) with moderate radiance (<400 W sr-1 m-2 ). Here, Joule heating and inefficient thermal dissipation are shown to be major obstacles toward high radiance and long lifetime. Several thermal management strategies are proposed in this work, such as doping charge-transport layers, optimizing device geometry, and attaching heat spreaders and sinks. Combining these strategies, high-performance perovskite LEDs are demonstrated with maximum radiance of 2555 W sr-1 m-2 , peak external quantum efficiency (EQE) of 17%, considerably reduced EQE roll-off (EQE > 10% to current densities as high as 2000 mA cm-2 ), and tenfold increase in operational lifetime (when driven at 100 mA cm-2 ). Furthermore, with proper thermal management, a maximum current density of 2.5 kA cm-2 and an EQE of ≈1% at 1 kA cm-2 are shown using electrical pulses, which represents an important milestone toward electrically driven perovskite lasers.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2020 |
|---|---|
| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:32 |
|---|---|
| Enthalten in: |
Advanced materials (Deerfield Beach, Fla.) - 32(2020), 25 vom: 21. Juni, Seite e2000752 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Zhao, Lianfeng [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
Device stability |
|---|
| Anmerkungen: |
Date Revised 30.09.2020 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1002/adma.202000752 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM309890322 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM309890322 | ||
| 003 | DE-627 | ||
| 005 | 20231225134911.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231225s2020 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1002/adma.202000752 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1032.xml |
| 035 | |a (DE-627)NLM309890322 | ||
| 035 | |a (NLM)32406172 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Zhao, Lianfeng |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Thermal Management Enables Bright and Stable Perovskite Light-Emitting Diodes |
| 264 | 1 | |c 2020 | |
| 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 30.09.2020 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. | ||
| 520 | |a The performance of lead-halide perovskite light-emitting diodes (LEDs) has increased rapidly in recent years. However, most reports feature devices operated at relatively small current densities (<500 mA cm-2 ) with moderate radiance (<400 W sr-1 m-2 ). Here, Joule heating and inefficient thermal dissipation are shown to be major obstacles toward high radiance and long lifetime. Several thermal management strategies are proposed in this work, such as doping charge-transport layers, optimizing device geometry, and attaching heat spreaders and sinks. Combining these strategies, high-performance perovskite LEDs are demonstrated with maximum radiance of 2555 W sr-1 m-2 , peak external quantum efficiency (EQE) of 17%, considerably reduced EQE roll-off (EQE > 10% to current densities as high as 2000 mA cm-2 ), and tenfold increase in operational lifetime (when driven at 100 mA cm-2 ). Furthermore, with proper thermal management, a maximum current density of 2.5 kA cm-2 and an EQE of ≈1% at 1 kA cm-2 are shown using electrical pulses, which represents an important milestone toward electrically driven perovskite lasers | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a device stability | |
| 650 | 4 | |a efficiency roll-off | |
| 650 | 4 | |a organic-inorganic hybrid perovskites | |
| 650 | 4 | |a perovskite light-emitting devices | |
| 650 | 4 | |a thermal management | |
| 700 | 1 | |a Roh, Kwangdong |e verfasserin |4 aut | |
| 700 | 1 | |a Kacmoli, Sara |e verfasserin |4 aut | |
| 700 | 1 | |a Al Kurdi, Khaled |e verfasserin |4 aut | |
| 700 | 1 | |a Jhulki, Samik |e verfasserin |4 aut | |
| 700 | 1 | |a Barlow, Stephen |e verfasserin |4 aut | |
| 700 | 1 | |a Marder, Seth R |e verfasserin |4 aut | |
| 700 | 1 | |a Gmachl, Claire |e verfasserin |4 aut | |
| 700 | 1 | |a Rand, Barry P |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Advanced materials (Deerfield Beach, Fla.) |d 1998 |g 32(2020), 25 vom: 21. Juni, Seite e2000752 |w (DE-627)NLM098206397 |x 1521-4095 |7 nnns |
| 773 | 1 | 8 | |g volume:32 |g year:2020 |g number:25 |g day:21 |g month:06 |g pages:e2000752 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1002/adma.202000752 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 32 |j 2020 |e 25 |b 21 |c 06 |h e2000752 | ||