TY - JOUR
T1 - Efficiency and stability enhancement of perovskite solar cells using reduced graphene oxide derived from earth-abundant natural graphite
AU - Suragtkhuu, Selengesuren
AU - Tserendavag, Odonchimeg
AU - Vandandoo, Ulziibayar
AU - Bati, Abdulaziz S.R.
AU - Bat-Erdene, Munkhjargal
AU - Shapter, Joseph G.
AU - Batmunkh, Munkhbayar
AU - Davaasambuu, Sarangerel
N1 - This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
PY - 2020/3/3
Y1 - 2020/3/3
N2 - Graphene-two-dimensional (2D) sheets of carbon atoms linked in a honeycomb pattern-has unique properties that exhibit great promise for various applications including solar cells. Herein we prepared two-dimensional (2D) reduced graphene oxide (rGO) nanosheets from naturally abundant graphite flakes (obtained from Tuv aimag in Mongolia) using solution processed chemical oxidation and thermal reduction methods. As a proof of concept, we used our rGO as a hole transporting material (HTM) in perovskite solar cells (PSCs). Promisingly, the use of rGO in the hole transporting layer (HTL) not only enhanced the photovoltaic efficiency of PSCs, but also improved the device stability. In particular, the best performing PSC employing rGO nanosheets exhibited a power conversion efficiency (PCE) of up to 18.13%, while the control device without rGO delivered a maximum efficiency of 17.26%. The present work demonstrates the possibilities for solving PSC issues (stability) using nanomaterials derived from naturally abundant graphite sources.
AB - Graphene-two-dimensional (2D) sheets of carbon atoms linked in a honeycomb pattern-has unique properties that exhibit great promise for various applications including solar cells. Herein we prepared two-dimensional (2D) reduced graphene oxide (rGO) nanosheets from naturally abundant graphite flakes (obtained from Tuv aimag in Mongolia) using solution processed chemical oxidation and thermal reduction methods. As a proof of concept, we used our rGO as a hole transporting material (HTM) in perovskite solar cells (PSCs). Promisingly, the use of rGO in the hole transporting layer (HTL) not only enhanced the photovoltaic efficiency of PSCs, but also improved the device stability. In particular, the best performing PSC employing rGO nanosheets exhibited a power conversion efficiency (PCE) of up to 18.13%, while the control device without rGO delivered a maximum efficiency of 17.26%. The present work demonstrates the possibilities for solving PSC issues (stability) using nanomaterials derived from naturally abundant graphite sources.
KW - perovskite solar cells
KW - graphene oxide
KW - natural graphite
KW - nanosheets
KW - reduced graphene oxide
KW - rGO
KW - PSCs
KW - hole transporting layer
KW - HTL
KW - power conversion efficiency
KW - PCE
UR - http://www.scopus.com/inward/record.url?scp=85081171542&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/ARC/DP160101301
U2 - 10.1039/d0ra01423k
DO - 10.1039/d0ra01423k
M3 - Article
AN - SCOPUS:85081171542
SN - 2046-2069
VL - 10
SP - 9133
EP - 9139
JO - RSC Advances
JF - RSC Advances
IS - 15
ER -