Pb-free Sn perovskite solar cells doped with samarium iodide

Kengo Hamada, Daisuke Hirotani, Muhammad Akmal Kamarudin, Kohei Nishimura, Qing Shen, Satoshi Iikubo, Takashi Minemoto, Kenji Yoshino, Taro Toyoda, Shuzi Hayase

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The efficiency of Sn-perovskite solar (Sn-PVK) cells was enhanced by adding 1% Samarium iodide (SmI2). Increase in Jsc and FF is associated with the enhancement of efficiency and and explained by lower series resistance. SmI2 is known as a strong reducing agent and is oxidized to Sm3+ by reducing a substrate. By adding 1 and 5% SmI2, the carrier concentration of Sn-perovskite layer due to the presence of Sn4+ was decreased from 4.8

Original languageEnglish
Pages (from-to)836-839
Number of pages4
JournalChemistry Letters
Issue number8
Publication statusPublished - 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)


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