Retarding charge recombination in perovskite solar cells using ultrathin MgO-coated TiO2 nanoparticulate films

Gill Sang Han; Hyun Suk Chung; Byeong Jo Kim; Dong Hoe Kim; Jin Wook Lee; Bhabani Sankar Swain; Khalid Mahmood; Jin Sun Yoo; Nam Gyu Park; Jung Heon Lee; Hyun Suk Jung

doi:10.1039/c4ta03684k

Retarding charge recombination in perovskite solar cells using ultrathin MgO-coated TiO₂ nanoparticulate films

Gill Sang Han
, Hyun Suk Chung
, Byeong Jo Kim
, Dong Hoe Kim
, Jin Wook Lee
, Bhabani Sankar Swain
, Khalid Mahmood
, Jin Sun Yoo
, Nam Gyu Park
, Jung Heon Lee^*
, Hyun Suk Jung

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

183 Citations (Scopus)

Abstract

MgO-coated TiO₂ nanoparticle (NP)-based electron collecting layers were fabricated to prevent charge recombination at the methylamine lead iodide/TiO₂ interface in perovskite solar cells. The open circuit voltage (V_oc) and fill factor (ff) of perovskite solar cells based on MgO-coated TiO₂ charge collectors were 0.89 V and 71.2%, respectively. These values were 4.7% and 6.1% higher than the pure TiO₂ based perovskite solar cells. Transient photovoltage decay data exhibited recombination times for MgO-coated TiO₂ NP-based perovskite solar cells about three times longer than those of TiO₂ NP based solar cells. The longer recombination time was responsible for enhancing the V_oc and ff of MgO-coated TiO₂ NP-based perovskite solar cells. By employing a MgO nanolayer, we observed that the power conversion efficiency (PCE) was increased from 11.4% to 12.7%, demonstrating that MgO ultrathin nanolayers are able to efficiently retard charge recombination in perovskite solar cells.

Original language	English
Pages (from-to)	9160-9164
Number of pages	5
Journal	Journal of Materials Chemistry A
Volume	3
Issue number	17
DOIs	https://doi.org/10.1039/c4ta03684k
Publication status	Published - 2015 May 7
Externally published	Yes

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

ASJC Scopus subject areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

Access to Document

10.1039/c4ta03684k

Cite this

@article{535279e5f3bb4cecb00b86805890245b,

title = "Retarding charge recombination in perovskite solar cells using ultrathin MgO-coated TiO2 nanoparticulate films",

abstract = "MgO-coated TiO2 nanoparticle (NP)-based electron collecting layers were fabricated to prevent charge recombination at the methylamine lead iodide/TiO2 interface in perovskite solar cells. The open circuit voltage (Voc) and fill factor (ff) of perovskite solar cells based on MgO-coated TiO2 charge collectors were 0.89 V and 71.2\%, respectively. These values were 4.7\% and 6.1\% higher than the pure TiO2 based perovskite solar cells. Transient photovoltage decay data exhibited recombination times for MgO-coated TiO2 NP-based perovskite solar cells about three times longer than those of TiO2 NP based solar cells. The longer recombination time was responsible for enhancing the Voc and ff of MgO-coated TiO2 NP-based perovskite solar cells. By employing a MgO nanolayer, we observed that the power conversion efficiency (PCE) was increased from 11.4\% to 12.7\%, demonstrating that MgO ultrathin nanolayers are able to efficiently retard charge recombination in perovskite solar cells.",

author = "Han, \{Gill Sang\} and Chung, \{Hyun Suk\} and Kim, \{Byeong Jo\} and Kim, \{Dong Hoe\} and Lee, \{Jin Wook\} and Swain, \{Bhabani Sankar\} and Khalid Mahmood and Yoo, \{Jin Sun\} and Park, \{Nam Gyu\} and Lee, \{Jung Heon\} and Jung, \{Hyun Suk\}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2015",

month = may,

day = "7",

doi = "10.1039/c4ta03684k",

language = "English",

volume = "3",

pages = "9160--9164",

journal = "Journal of Materials Chemistry A",

issn = "2050-7488",

publisher = "Royal Society of Chemistry",

number = "17",

}

TY - JOUR

T1 - Retarding charge recombination in perovskite solar cells using ultrathin MgO-coated TiO2 nanoparticulate films

AU - Han, Gill Sang

AU - Chung, Hyun Suk

AU - Kim, Byeong Jo

AU - Kim, Dong Hoe

AU - Lee, Jin Wook

AU - Swain, Bhabani Sankar

AU - Mahmood, Khalid

AU - Yoo, Jin Sun

AU - Park, Nam Gyu

AU - Lee, Jung Heon

AU - Jung, Hyun Suk

PY - 2015/5/7

Y1 - 2015/5/7

N2 - MgO-coated TiO2 nanoparticle (NP)-based electron collecting layers were fabricated to prevent charge recombination at the methylamine lead iodide/TiO2 interface in perovskite solar cells. The open circuit voltage (Voc) and fill factor (ff) of perovskite solar cells based on MgO-coated TiO2 charge collectors were 0.89 V and 71.2%, respectively. These values were 4.7% and 6.1% higher than the pure TiO2 based perovskite solar cells. Transient photovoltage decay data exhibited recombination times for MgO-coated TiO2 NP-based perovskite solar cells about three times longer than those of TiO2 NP based solar cells. The longer recombination time was responsible for enhancing the Voc and ff of MgO-coated TiO2 NP-based perovskite solar cells. By employing a MgO nanolayer, we observed that the power conversion efficiency (PCE) was increased from 11.4% to 12.7%, demonstrating that MgO ultrathin nanolayers are able to efficiently retard charge recombination in perovskite solar cells.

AB - MgO-coated TiO2 nanoparticle (NP)-based electron collecting layers were fabricated to prevent charge recombination at the methylamine lead iodide/TiO2 interface in perovskite solar cells. The open circuit voltage (Voc) and fill factor (ff) of perovskite solar cells based on MgO-coated TiO2 charge collectors were 0.89 V and 71.2%, respectively. These values were 4.7% and 6.1% higher than the pure TiO2 based perovskite solar cells. Transient photovoltage decay data exhibited recombination times for MgO-coated TiO2 NP-based perovskite solar cells about three times longer than those of TiO2 NP based solar cells. The longer recombination time was responsible for enhancing the Voc and ff of MgO-coated TiO2 NP-based perovskite solar cells. By employing a MgO nanolayer, we observed that the power conversion efficiency (PCE) was increased from 11.4% to 12.7%, demonstrating that MgO ultrathin nanolayers are able to efficiently retard charge recombination in perovskite solar cells.

UR - https://www.scopus.com/pages/publications/84928501267

U2 - 10.1039/c4ta03684k

DO - 10.1039/c4ta03684k

M3 - Article

AN - SCOPUS:84928501267

SN - 2050-7488

VL - 3

SP - 9160

EP - 9164

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 17

ER -