High-efficiency perovskite solar cells based on the black polymorph of HC(NH2)2 PbI3

Adv Mater. 2014 Aug 6;26(29):4991-8. doi: 10.1002/adma.201401137. Epub 2014 Jun 13.

Abstract

Perovskite solar cells with power conversion efficiencies exceeding 16% at AM 1.5 G one sun illumination are developed using the black polymorph of formamidnium lead iodide, HC(NH2)2 PbI3 . Compared with CH3 NH3 PbI3 , HC(NH2 )2 PbI3 extends its absoprtion to 840 nm and shows no phase transition between 296 and 423 K. Moreover, a solar cell based on HC(NH2 )2 PbI3 exhibits photostability and little I-V hysteresis.

Keywords: HC(NH2)2I; HC(NH2)2PbI3; formamidinium lead iodide; perovskite solar cells; record efficiency.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption, Physicochemical
  • Amidines / chemistry*
  • Calcium Compounds / chemistry*
  • Cellulose / analogs & derivatives
  • Cellulose / chemistry
  • Electric Power Supplies*
  • Iodides / chemistry*
  • Lead / chemistry*
  • Oxides / chemistry*
  • Solar Energy*
  • Titanium / chemistry*

Substances

  • Amidines
  • Calcium Compounds
  • Iodides
  • Oxides
  • perovskite
  • titanium dioxide
  • Lead
  • formamidine
  • ethyl cellulose
  • Cellulose
  • Titanium