Planar heterojunction perovskite solar cells with superior reproducibility.
Perovskite solar cells (PeSCs) have been considered one of the competitive next generation power sources. To date, light-to-electric conversion efficiencies have rapidly increased to over 10%, and further improvements are expected. However, the poor device reproducibility of PeSCs ascribed to their inhomogeneously covered film morphology has hindered their practical application. Here, we demonstrate high-performance PeSCs with superior reproducibility by introducing small amounts of N-cyclohexyl-2-pyrrolidone (CHP) as a morphology controller into N,N-dimethylformamide (DMF). As a result, highly homogeneous film morphology, similar to that achieved by vacuum-deposition methods, as well as a high PCE of 10% and an extremely small performance deviation within 0.14% were achieved. This study represents a method for realizing efficient and reproducible planar heterojunction (PHJ) PeSCs through morphology control, taking a major step forward in the low-cost and rapid production of PeSCs by solving one of the biggest problems of PHJ perovskite photovoltaic technology through a facile method.
School of Materials Science and Engineering, Department of Nanobiomaterials and Electronics, Heeger Center for Advanced Materials, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea.
Ye-Jin
YJ
Jeon
School of Materials Science and Engineering, Department of Nanobiomaterials and Electronics, Heeger Center for Advanced Materials, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea.
Sehyun
S
Lee
School of Materials Science and Engineering, Department of Nanobiomaterials and Electronics, Heeger Center for Advanced Materials, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea.
Rira
R
Kang
School of Materials Science and Engineering, Department of Nanobiomaterials and Electronics, Heeger Center for Advanced Materials, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea.
Jueng-Eun
JE
Kim
School of Materials Science and Engineering, Department of Nanobiomaterials and Electronics, Heeger Center for Advanced Materials, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea.
Jun-Seok
JS
Yeo
School of Materials Science and Engineering, Department of Nanobiomaterials and Electronics, Heeger Center for Advanced Materials, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea.
Seung-Hoon
SH
Lee
School of Materials Science and Chemical Engineering, Kunsan National University, Kunsan, Chonbuk 753-701, Republic of Korea.
Seok-Soon
SS
Kim
Radiation Research Division for Industry and Environment, Korea Atomic Energy Research Institute (KAERI), Geumgu-gil 29, Jeongeup-si, Jeollabuk-do 580-185, Republic of Korea.
Jin-Mun
JM
Yun
School of Materials Science and Engineering, Department of Nanobiomaterials and Electronics, Heeger Center for Advanced Materials, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea.
Dong-Yu
DY
Kim