TY - JOUR
T1 - Metallic surface doping of metal halide perovskites
AU - Lin, Yuze
AU - Shao, Yuchuan
AU - Dai, Jun
AU - Li, Tao
AU - Liu, Ye
AU - Dai, Xuezeng
AU - Xiao, Xun
AU - Deng, Yehao
AU - Gruverman, Alexei
AU - Zeng, Xiao Cheng
AU - Huang, Jinsong
N1 - Funding Information:
This work is financially supported by the Center for Hybrid Organic Inorganic Semiconductors for Energy (CHOISE), an Energy Frontier Research Center funded by the Office of Basic Energy Sciences, Office of Science within the U.S. Department of Energy and the National Science Foundation through the Nebraska Materials Research Science and Engineering Center (MRSEC) (Grant No. DMR-1420645). X.C.Z. also thanks computational support by UNL Holland Computing Center.
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12
Y1 - 2021/12
N2 - Intentional doping is the core of semiconductor technologies to tune electrical and optical properties of semiconductors for electronic devices, however, it has shown to be a grand challenge for halide perovskites. Here, we show that some metal ions, such as silver, strontium, cerium ions, which exist in the precursors of halide perovskites as impurities, can n-dope the surface of perovskites from being intrinsic to metallic. The low solubility of these ions in halide perovskite crystals excludes the metal impurities to perovskite surfaces, leaving the interior of perovskite crystals intrinsic. Computation shows these metal ions introduce many electronic states close to the conduction band minimum of perovskites and induce n-doping, which is in striking contrast to passivating ions such as potassium and rubidium ion. The discovery of metallic surface doping of perovskites enables new device and material designs that combine the intrinsic interior and heavily doped surface of perovskites.
AB - Intentional doping is the core of semiconductor technologies to tune electrical and optical properties of semiconductors for electronic devices, however, it has shown to be a grand challenge for halide perovskites. Here, we show that some metal ions, such as silver, strontium, cerium ions, which exist in the precursors of halide perovskites as impurities, can n-dope the surface of perovskites from being intrinsic to metallic. The low solubility of these ions in halide perovskite crystals excludes the metal impurities to perovskite surfaces, leaving the interior of perovskite crystals intrinsic. Computation shows these metal ions introduce many electronic states close to the conduction band minimum of perovskites and induce n-doping, which is in striking contrast to passivating ions such as potassium and rubidium ion. The discovery of metallic surface doping of perovskites enables new device and material designs that combine the intrinsic interior and heavily doped surface of perovskites.
UR - http://www.scopus.com/inward/record.url?scp=85098644633&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85098644633&partnerID=8YFLogxK
U2 - 10.1038/s41467-020-20110-6
DO - 10.1038/s41467-020-20110-6
M3 - Article
C2 - 33397890
AN - SCOPUS:85098644633
VL - 12
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 7
ER -