DataVXACS Energy LettersPaper
journal article·2020-03-13

Enhancing Charge Carrier Delocalization in Perovskite Quantum Dot Solids with Energetically Aligned Conjugated Capping Ligands

Evan T. Vickers, Emily E. Enlow, William G. Delmas, Albert C. DiBenedetto, Ashraful H. Chowdhury, Behzad Bahrami, Benjamin W. Dreskin, Thomas A. Graham, Isaak N. Hernandez, Sue A. Carter, Sayantani Ghosh, Qiquan Qiao, Jin Z. Zhang

ACS Energy Letters· Volume 5· Issue 3
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Source abstract

Abstract

Compared to bulk perovskites, charge transport in perovskite quantum dot (PQD) solids is limited. To address this issue, energetically aligned capping ligands were used to prepare methylammonium lead bromide (MAPbBr3) PQDs toward enhancing surface charge carrier density in PQD solids. Trans-cinnamic acid (TCA) and its derivates, functionalized with electron-donating or electron-withdrawing groups to modulate energy levels, are used as passivating exciton-delocalizing ligands (EDLs) to decrease the energy gap with respect to the PQD core. 3,3-Diphenylpropylamine (DPPA) ligand is shown to stabilize EDLs on the PQD surface through π–π stacking intermolecular interaction, mitigating charge trapping and nonradiative decay. Passivation using EDLs in combination with DPPA increases the photoluminescence (PL) quantum yield (QY) (90%), photoconductivity, extraction, mobility, transport time, and lifetime of charge carriers in PQD solids. Prototype PQD-based light-emitting diodes (LEDs) were demonstrated with a low turn-on voltage of 2.5 V.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Organic Light-Emitting Diodes Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States

Department of Physics, University of California, Santa Cruz, California 95064, United States

Department of Physics, School of Natural Sciences, University of California, Merced, California 95344, United States

Department of Electrical Engineering and Computer Science, Center for Advanced Photovoltaics and Sustainable Energy, South Dakota State University, Brookings, South Dakota 57007, United States

Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States

Funding

Division of Chemistry · Basic Energy Sciences · South Dakota Board of Regents · National Aeronautics and Space Administration · Division of Chemical, Bioengineering, Environmental, and Transport Systems · University of California, Santa Cruz · Economic Development Administration · U.S. - Egypt Science and Technology Joint Fund

References (50)

Show source-provided references
1. 10.1021/jacs.5b1072310.1021/jacs.5b10723 ↗
2. 10.1021/acs.chemrev.6b0013610.1021/acs.chemrev.6b00136 ↗
3. 10.1038/s41563-018-0071-z10.1038/s41563-018-0071-z ↗
4. 10.3390/ma1105072910.3390/ma11050729 ↗
5. 10.1016/j.ccr.2017.10.02110.1016/j.ccr.2017.10.021 ↗
6. 10.1002/advs.20170078010.1002/advs.201700780 ↗
7. 10.1021/acsenergylett.9b0051810.1021/acsenergylett.9b00518 ↗
8. 10.1021/acs.jpclett.9b0027710.1021/acs.jpclett.9b00277 ↗
9. 10.1039/C8EE02744G10.1039/C8EE02744G ↗
10. 10.1021/acsenergylett.6b0000210.1021/acsenergylett.6b00002 ↗
11. 10.1021/acsami.6b0577010.1021/acsami.6b05770 ↗
12. 10.1021/acsenergylett.6b0019610.1021/acsenergylett.6b00196 ↗
13. 10.1021/acs.jpclett.6b0280010.1021/acs.jpclett.6b02800 ↗
14. 10.1021/acsenergylett.7b0054710.1021/acsenergylett.7b00547 ↗
15. 10.1016/j.jechem.2017.10.01810.1016/j.jechem.2017.10.018 ↗
16. 10.1038/s41467-018-06596-110.1038/s41467-018-06596-1 ↗
17. 10.1021/acs.chemrev.8b0053910.1021/acs.chemrev.8b00539 ↗
18. 10.1038/nnano.2015.24710.1038/nnano.2015.247 ↗
19. 10.1021/jp404031s10.1021/jp404031s ↗
20. 10.1021/am405196u10.1021/am405196u ↗
21. 10.1021/acsenergylett.6b0071710.1021/acsenergylett.6b00717 ↗
22. 10.1002/anie.20180178010.1002/anie.201801780 ↗
23. 10.1021/acsenergylett.8b0175410.1021/acsenergylett.8b01754 ↗
24. 10.1021/acsenergylett.8b0215710.1021/acsenergylett.8b02157 ↗
25. 10.1039/C4TA02637C10.1039/C4TA02637C ↗
26. 10.1039/C5EE03874J10.1039/C5EE03874J ↗
27. 10.1021/acsenergylett.7b0002810.1021/acsenergylett.7b00028 ↗
28. 10.1021/acsenergylett.9b0093010.1021/acsenergylett.9b00930 ↗
29. 10.1039/b715253a10.1039/b715253a ↗
30. 10.1021/nn100743510.1021/nn1007435 ↗
31. 10.1021/nl304098e10.1021/nl304098e ↗
32. 10.1021/jz301905n10.1021/jz301905n ↗
33. 10.1021/nl502369910.1021/nl5023699 ↗
34. 10.1038/ncomms1525710.1038/ncomms15257 ↗
35. 10.1021/acs.jpclett.8b0145110.1021/acs.jpclett.8b01451 ↗
36. 10.1021/acsnano.9b0019110.1021/acsnano.9b00191 ↗
37. 10.1021/acs.jpcc.6b0817810.1021/acs.jpcc.6b08178 ↗
38. 10.1021/ja410920910.1021/ja4109209 ↗
39. 10.1021/acs.jpcc.9b0552110.1021/acs.jpcc.9b05521 ↗
40. 10.1063/1.44721810.1063/1.447218 ↗
41. 10.1021/acsenergylett.8b0103710.1021/acsenergylett.8b01037 ↗
42. 10.1021/la201273x10.1021/la201273x ↗
43. 10.1039/C5NR07592K10.1039/C5NR07592K ↗
44. 10.1021/acs.chemmater.7b0110310.1021/acs.chemmater.7b01103 ↗
45. 10.1021/acs.jpclett.7b0109310.1021/acs.jpclett.7b01093 ↗
46. 10.1016/j.saa.2014.02.12210.1016/j.saa.2014.02.122 ↗
47. 10.1038/nature2403210.1038/nature24032 ↗
48. 10.1002/adfm.20170518910.1002/adfm.201705189 ↗
49. 10.1021/acsomega.9b0046410.1021/acsomega.9b00464 ↗
50. 10.1021/acsami.5b1037310.1021/acsami.5b10373 ↗