Two birds with one stone: dual grain-boundary and interface passivation enables >22% efficient inverted methylammonium-free perovskite solar cells
Saba Gharibzadeh,Paul Fassl,Ihteaz M. Hossain,Pascal Rohrbeck,Markus Frericks,Moritz Schmidt,Motiur Rahman Khan,Tobias Abzieher,Bahram Abdollahi Nejand,Fabian Schackmar,Osbel Almora,Thomas Feeney,Roja Singh,Dirk Fuchs,Uli Lemmer,Jan P. Hofmann,Stefan A. L. Weber,Ulrich W. Paetzold +17 more
TLDR
In this article, a dual passivation strategy using the long chain alkylammonium salt phenethylamium chloride (PEACl) both as an additive and for surface treatment to simultaneously passivate the grain boundaries and the perovskite/C60 interface was introduced.Abstract:
Advancing inverted (p–i–n) perovskite solar cells (PSCs) is key to further enhance the power conversion efficiency (PCE) and stability of flexible and perovskite-based tandem photovoltaics. Yet, the presence of defects at grain boundaries and in particular interfacial recombination at the perovskite/electron transporting layer interface induce severe non-radiative recombination losses, limiting the open-circuit voltage (VOC) and fill factor (FF) of PSCs in this architecture. In this work, we introduce a dual passivation strategy using the long chain alkylammonium salt phenethylammonium chloride (PEACl) both as an additive and for surface treatment to simultaneously passivate the grain boundaries and the perovskite/C60 interface. Using [2-(9H-carbazol-9-yl)ethyl]phosphonic acid (2PACz) as a hole transporting layer and a methylammonium (MA)-free Cs0.18FA0.82PbI3 perovskite absorber with a bandgap of ∼1.57 eV, prolonged charge carrier lifetime and an on average 63 meV enhanced internal quasi-Fermi level splitting are achieved upon dual passivation compared to reference p–i–n PSCs. Thereby, we achieve one of the highest PCEs for p–i–n PSCs of 22.7% (stabilized at 22.3%) by advancing simultaneously the VOC and FF up to 1.162 V and 83.2%, respectively. Using a variety of experimental techniques, we attribute the positive effects to the formation of a heterogeneous 2D Ruddlesden–Popper (PEA)2(Cs1−xFAx)n−1Pbn(I1−yCly)3n+1 phase at the grain boundaries and surface of the perovskite films. At the same time, the activation energy for ion migration is significantly increased, resulting in enhanced stability of the PSCs under light, humidity, and thermal stress. The presented dual passivation strategy highlights the importance of defect management both in the grain boundaries and the surface of the perovskite absorber layer using a proper passivation material to achieve both highly efficient and stable inverted p–i–n PSCs.read more
Citations
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Damp heat–stable perovskite solar cells with tailored-dimensionality 2D/3D heterojunctions
Randi Azmi,Esma Ugur,Akmaral Seitkhan,Faisal Aljamaan,Anand S. Subbiah,Jiang Liu,George T. Harrison,Mohamad Insan Nugraha,Mathan Kumar Eswaran,Maxime Babics,Yuang-Long Chen,Fuzong Xu,Thomas Allen,Atteq ur Rehman,Chien-Lung Wang,Thomas D. Anthopoulos,Udo Schwingenschlögl,Michele De Bastiani,Erkan Aydin,Stefaan De Wolf +19 more
TL;DR: Azmi et al. as mentioned in this paper fabricated damp heat-stable inverted solar cells by tailoring the dimensional fragments of two-dimensional perovskite layers formed at room temperature with oleylammonium iodide molecules.
Journal ArticleDOI
23.7% Efficient inverted perovskite solar cells by dual interfacial modification.
Matteo Degani,Matteo Degani,Qingzhi An,Miguel Albaladejo-Siguan,Yvonne J. Hofstetter,Changsoon Cho,Fabian Paulus,Giulia Grancini,Yana Vaynzof +8 more
TL;DR: In this article, the performance of lead halide perovskite solar cells fabricated in an inverted structure lags behind that of standard architecture devices, and the authors report on a dual-i.i.d.
Journal ArticleDOI
Perovskite/CIGS Tandem Solar Cells: From Certified 24.2% toward 30% and Beyond
Marko Jošt,Eike Köhnen,Amran Al-Ashouri,Tobias Bertram,Špela Tomšič,Artiom Magomedov,Ernestas Kasparavicius,Tim Kodalle,Benjamin Lipovšek,Vytautas Getautis,Rutger Schlatmann,Christian A. Kaufmann,Steve Albrecht,Marko Topič +13 more
TL;DR: In this paper , a monolithic perovskite/CIGS tandem solar cell with a certified power conversion efficiency (PCE) of 24.2% was demonstrated.
Journal ArticleDOI
Additive‐Free, Low‐Temperature Crystallization of Stable α‐FAPbI <sub>3</sub> Perovskite
Joe Briscoe,Alexander F. Schmidt +1 more
TL;DR: In this article , aerosol-assisted crystallization (AAC) was used to obtain phase-stable α-FAPbI3 p-i-n solar cells, which demonstrates increases of both power conversion efficiency and operational stability compared to devices fabricated using 150 °C annealed films.
References
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Journal ArticleDOI
Surface passivation of perovskite film for efficient solar cells
Qi Jiang,Yang Zhao,Xingwang Zhang,Xiaolei Yang,Yong Chen,Zema Chu,Qiufeng Ye,Li Xingxing,Zhigang Yin,Jingbi You +9 more
TL;DR: In this paper, an organic halide salt phenethylammonium iodide (PEAI) was used on HC(NH2)2-CH3NH3 mixed perovskite films for surface defect passivation.
Journal ArticleDOI
Efficient, stable and scalable perovskite solar cells using poly(3-hexylthiophene)
Eui Hyuk Jung,Nam Joong Jeon,Eun Young Park,Chan Su Moon,Tae Joo Shin,Tae-Youl Yang,Jun Hong Noh,Jangwon Seo +7 more
TL;DR: A double-layered halide architecture for perovskite solar cells enables the use of dopant-free poly(3-hexylthiophene) as a hole-transport material, forming stable and scalable devices with a certified power conversion efficiency of 22.7 per cent.
Journal ArticleDOI
Pseudo-halide anion engineering for α-FAPbI3 perovskite solar cells.
Jaeki Jeong,Jaeki Jeong,Minjin Kim,Jongdeuk Seo,Haizhou Lu,Paramvir Ahlawat,Aditya Mishra,Yingguo Yang,Michael A. Hope,Felix Eickemeyer,Maengsuk Kim,Yung Jin Yoon,In Woo Choi,Barbara Primera Darwich,Seung Ju Choi,Yimhyun Jo,Jun Hee Lee,Bright Walker,Shaik M. Zakeeruddin,Lyndon Emsley,Ursula Rothlisberger,Anders Hagfeldt,Anders Hagfeldt,Dong Suk Kim,Michael Grätzel,Jin Young Kim +25 more
TL;DR: In this paper, the pseudo-halide anion formate (HCOO−) was used to suppress anion-vacancy defects that are present at grain boundaries and at the surface of the perovskite films.
Journal ArticleDOI
Efficient perovskite solar cells via improved carrier management
Jason J. Yoo,Gabkyung Seo,Matthew R. Chua,Tae Gwan Park,Yongli Lu,Fabian Rotermund,Young-Ki Kim,Chan Su Moon,Nam Joong Jeon,Juan-Pablo Correa-Baena,Vladimir Bulovic,Seong Sik Shin,Moungi G. Bawendi,Jangwon Seo +13 more
TL;DR: In this paper, an electron transport layer with an ideal film coverage, thickness and composition was developed by tuning the chemical bath deposition of tin dioxide (SnO2) to improve the performance of metal halide perovskite solar cells.
Journal ArticleDOI
Defect passivation in hybrid perovskite solar cells using quaternary ammonium halide anions and cations
Xiaopeng Zheng,Bo Chen,Jun Dai,Yanjun Fang,Yang Bai,Yuze Lin,Haotong Wei,Xiao Cheng Zeng,Jinsong Huang,Jinsong Huang +9 more
TL;DR: Zheng et al. as discussed by the authors showed that quaternary ammonium halides can effectively passivate ionic defects in several different types of hybrid perovskite with their negative-and positive-charged components.
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