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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Potassium-induced surface modification of Cu(In,Ga)Se2 thin films for high-efficiency solar cells
|
|---|---|
| Published in |
Nature Materials, November 2013
|
| DOI | 10.1038/nmat3789 |
| Pubmed ID | |
| Authors |
Adrian Chirilă, Patrick Reinhard, Fabian Pianezzi, Patrick Bloesch, Alexander R. Uhl, Carolin Fella, Lukas Kranz, Debora Keller, Christina Gretener, Harald Hagendorfer, Dominik Jaeger, Rolf Erni, Shiro Nishiwaki, Stephan Buecheler, Ayodhya N. Tiwari |
| Abstract |
Thin-film photovoltaic devices based on chalcopyrite Cu(In,Ga)Se2 (CIGS) absorber layers show excellent light-to-power conversion efficiencies exceeding 20%. This high performance level requires a small amount of alkaline metals incorporated into the CIGS layer, naturally provided by soda lime glass substrates used for processing of champion devices. The use of flexible substrates requires distinct incorporation of the alkaline metals, and so far mainly Na was believed to be the most favourable element, whereas other alkaline metals have resulted in significantly inferior device performance. Here we present a new sequential post-deposition treatment of the CIGS layer with sodium and potassium fluoride that enables fabrication of flexible photovoltaic devices with a remarkable conversion efficiency due to modified interface properties and mitigation of optical losses in the CdS buffer layer. The described treatment leads to a significant depletion of Cu and Ga concentrations in the CIGS near-surface region and enables a significant thickness reduction of the CdS buffer layer without the commonly observed losses in photovoltaic parameters. Ion exchange processes, well known in other research areas, are proposed as underlying mechanisms responsible for the changes in chemical composition of the deposited CIGS layer and interface properties of the heterojunction. |
X Demographics
The data shown below were collected from the profiles of 4 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 25% |
| Unknown | 3 | 75% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Scientists | 3 | 75% |
| Members of the public | 1 | 25% |
Mendeley readers
The data shown below were compiled from readership statistics for 582 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 3 | <1% |
| Germany | 2 | <1% |
| Japan | 2 | <1% |
| Canada | 2 | <1% |
| Switzerland | 1 | <1% |
| Netherlands | 1 | <1% |
| Côte d'Ivoire | 1 | <1% |
| India | 1 | <1% |
| Korea, Republic of | 1 | <1% |
| Other | 5 | <1% |
| Unknown | 563 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 180 | 31% |
| Researcher | 112 | 19% |
| Student > Master | 90 | 15% |
| Student > Doctoral Student | 31 | 5% |
| Student > Bachelor | 23 | 4% |
| Other | 50 | 9% |
| Unknown | 96 | 16% |
| Readers by discipline | Count | As % |
|---|---|---|
| Materials Science | 144 | 25% |
| Physics and Astronomy | 104 | 18% |
| Engineering | 89 | 15% |
| Chemistry | 48 | 8% |
| Energy | 27 | 5% |
| Other | 39 | 7% |
| Unknown | 131 | 23% |
Attention Score in Context
This research output has an Altmetric Attention Score of 75. 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 22 February 2022.
All research outputs
#492,710
of 23,172,045 outputs
Outputs from Nature Materials
#506
of 4,008 outputs
Outputs of similar age
#4,460
of 215,160 outputs
Outputs of similar age from Nature Materials
#4
of 60 outputs
Altmetric has tracked 23,172,045 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 97th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 4,008 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 32.5. This one has done well, scoring higher than 87% of its peers.
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 215,160 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 97% of its contemporaries.
We're also able to compare this research output to 60 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 93% of its contemporaries.