Hot Paper in Chemistry

February 2015
“Efficient planar heterojunction perovskite solar cells by vapour deposition,” by M.Z. Liu, M.B. Johnston, H.J. Snaith, Nature, 501(7467): 395, 19 September 2013.

Abstract: “Many different photovoltaic technologies are being developed for large-scale solar energy conversion. The wafer-based first-generation photovoltaic devices have been followed by thin-film solid semiconductor absorber layers sandwiched between two charge-selective contacts and nanostructured (or mesostructured) solar cells that rely on a distributed heterojunction to generate charge and to transport positive and negative charges in spatially separated phases. Although many materials have been used in nanostructured devices, the goal of attaining high-efficiency thin-film solar cells in such a way has yet to be achieved. Organometal halide perovskites have recently emerged as a promising material for high-efficiency nanostructured devices. Here we show that nanostructuring is not necessary to achieve high efficiencies with this material: a simple planar heterojunction solar cell incorporating vapour-deposited perovskite as the absorbing layer can have solar-to-electrical power conversion efficiencies of over 15 per cent (as measured under simulated full sunlight). This demonstrates that perovskite absorbers can function at the highest efficiencies in simplified device architectures, without the need for complex nanostructures.”

 

This 2013 report from Nature was cited 69 times in current journal articles indexed by Thomson Reuters during September-October 2014. During that two-month period, only one paper indexed in the last two years under the main heading of Chemistry (including Materials Science) collected a higher number of citations. Prior to the most recent bimonthly count, citations to the report have accrued as follows, as tracked by Essential Science Indicators Hot Papers:

 

July-August 2014: 84 citations
May-June 2014: 39
March-April 2014: 41
January-February 2014: 71
November-December 2013: 12
September-October 2013: 4

 

Total citations to date: 320

 

SOURCE: Thomson Reuters Web of Science

The data and citation records included in this report are from Thomson Reuters Web of ScienceTM. Web of ScienceTM is a registered trademark of Thomson Reuters. All rights reserved.