A Liquid Junction Photoelectrochemical Solar Cell Based on p-Type MeNH3PbI3 Perovskite with 1.05 v Open-Circuit Photovoltage

Hsien Yi Hsu, Li Ji, Hyun S. Ahn, Ji Zhao, Edward T. Yu, Allen J. Bard

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


A liquid junction photoelectrochemical (PEC) solar cell based on p-type methylammonium lead iodide (p-MeNH3PbI3) perovskite with a large open-circuit voltage is developed. MeNH3PbI3 perovskite is readily soluble or decomposed in many common solvents. However, the solvent dichloromethane (CH2Cl2) can be employed to form stable liquid junctions. These were characterized with photoelectrochemical cells with several redox couples, including I3-/I-, Fc/Fc+, DMFc/DMFc+, and BQ/BQ. (where Fc is ferrocene, DMFc is decamethylferrocene, BQ is benzoquinone) in CH2Cl2. The solution-processed MeNH3PbI3 shows cathodic photocurrents and hence p-type behavior. The difference between the photocurrent onset potential and the standard potential for BQ/BQ. is 1.25 V, which is especially large for a semiconductor with a band gap of 1.55 eV. A PEC photovoltaic cell, with a configuration of p-MeNH3PbI3/CH2Cl2, BQ (2 mM), BQ. (2 mM)/carbon, shows an open-circuit photovoltage of 1.05 V and a short-circuit current density of 7.8 mA/cm2 under 100 mW/cm2 irradiation. The overall optical-to-electrical energy conversion efficiency is 6.1%. The PEC solar cell shows good stability for 5 h under irradiation.

Original languageEnglish
Pages (from-to)14758-14764
Number of pages7
JournalJournal of the American Chemical Society
Issue number46
Publication statusPublished - 2015 Nov 25

Bibliographical note

Publisher Copyright:
© 2015 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


Dive into the research topics of 'A Liquid Junction Photoelectrochemical Solar Cell Based on p-Type MeNH<sub>3</sub>PbI<sub>3</sub> Perovskite with 1.05 v Open-Circuit Photovoltage'. Together they form a unique fingerprint.

Cite this