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Attention Score in Context
| Title |
Minimising efficiency roll-off in high-brightness perovskite light-emitting diodes
|
|---|---|
| Published in |
Nature Communications, February 2018
|
| DOI | 10.1038/s41467-018-03049-7 |
| Pubmed ID | |
| Authors |
Wei Zou, Renzhi Li, Shuting Zhang, Yunlong Liu, Nana Wang, Yu Cao, Yanfeng Miao, Mengmeng Xu, Qiang Guo, Dawei Di, Li Zhang, Chang Yi, Feng Gao, Richard H. Friend, Jianpu Wang, Wei Huang |
| Abstract |
Efficiency roll-off is a major issue for most types of light-emitting diodes (LEDs), and its origins remain controversial. Here we present investigations of the efficiency roll-off in perovskite LEDs based on two-dimensional layered perovskites. By simultaneously measuring electroluminescence and photoluminescence on a working device, supported by transient photoluminescence decay measurements, we conclude that the efficiency roll-off in perovskite LEDs is mainly due to luminescence quenching which is likely caused by non-radiative Auger recombination. This detrimental effect can be suppressed by increasing the width of quantum wells, which can be easily realized in the layered perovskites by tuning the ratio of large and small organic cations in the precursor solution. This approach leads to the realization of a perovskite LED with a record external quantum efficiency of 12.7%, and the efficiency remains to be high, at approximately 10%, under a high current density of 500 mA cm-2. |
X Demographics
The data shown below were collected from the profiles of 2 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Australia | 1 | 50% |
| Unknown | 1 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 2 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 297 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 297 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 74 | 25% |
| Researcher | 43 | 14% |
| Student > Master | 37 | 12% |
| Student > Doctoral Student | 13 | 4% |
| Student > Bachelor | 12 | 4% |
| Other | 32 | 11% |
| Unknown | 86 | 29% |
| Readers by discipline | Count | As % |
|---|---|---|
| Materials Science | 55 | 19% |
| Physics and Astronomy | 46 | 15% |
| Chemistry | 38 | 13% |
| Engineering | 27 | 9% |
| Energy | 11 | 4% |
| Other | 15 | 5% |
| Unknown | 105 | 35% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 09 February 2018.
All research outputs
#18,811,512
of 23,313,051 outputs
Outputs from Nature Communications
#45,288
of 48,206 outputs
Outputs of similar age
#333,628
of 444,130 outputs
Outputs of similar age from Nature Communications
#1,095
of 1,162 outputs
Altmetric has tracked 23,313,051 research outputs across all sources so far. This one is in the 11th percentile – i.e., 11% of other outputs scored the same or lower than it.
So far Altmetric has tracked 48,206 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 56.2. This one is in the 2nd percentile – i.e., 2% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 444,130 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 14th percentile – i.e., 14% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 1,162 others from the same source and published within six weeks on either side of this one. This one is in the 2nd percentile – i.e., 2% of its contemporaries scored the same or lower than it.