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From computational discovery to experimental characterization of a high hole mobility organic crystal

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms1451· OSTI ID:1623876
 [1];  [2];  [3];  [3];  [2];  [4];  [5];  [6];  [3];  [3];  [2]
  1. Stanford Univ., CA (United States). Dept. of Chemical Engineering; DOE/OSTI
  2. Harvard Univ., Cambridge, MA (United States). Dept. of Chemistry and Chemical Biology
  3. Stanford Univ., CA (United States). Dept. of Chemical Engineering
  4. Clark Univ., Worcester, MA (United States). Dept. of Chemistry
  5. Haverford College, Haverford, PA (United States). Dept. of Chemistry
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
For organic semiconductors to find ubiquitous electronics applications, the development of new materials with high mobility and air stability is critical. Despite the versatility of carbon, exploratory chemical synthesis in the vast chemical space can be hindered by synthetic and characterization difficulties. Here we show that in silico screening of novel derivatives of the dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene semiconductor with high hole mobility and air stability can lead to the discovery of a new high-performance semiconductor. On the basis of estimates from the Marcus theory of charge transfer rates, we identified a novel compound expected to demonstrate a theoretic twofold improvement in mobility over the parent molecule. Synthetic and electrical characterization of the compound is reported with single-crystal fieldeffect transistors, showing a remarkable saturation and linear mobility of 12.3 and 16cm2V-1 s-1 , respectively. This is one of the very few organic semiconductors with mobility greater than 10cm2V-1 s-1 reported to date.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1623876
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 2; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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