Journal ArticleDOI
Monolithic all-perovskite tandem solar cells with 24.8% efficiency exploiting comproportionation to suppress Sn( ii ) oxidation in precursor ink
Renxing Lin,Ke Xiao,Zhengyuan Qin,Qiaolei Han,Chunfeng Zhang,Mingyang Wei,Makhsud I. Saidaminov,Yuan Gao,Jun Xu,Min Xiao,Aidong Li,Jia Zhu,Edward H. Sargent,Hairen Tan +13 more
TLDR
Lin et al. as discussed by the authors used metallic tin to prevent oxidation in mixed Pb-Sn narrowbandgap perovskites to reduce the Sn4+ (an oxidation product of Sn2+) to Sn2+ via a comproportionation reaction.Abstract:
Combining wide-bandgap and narrow-bandgap perovskites to construct monolithic all-perovskite tandem solar cells offers avenues for continued increases in photovoltaic (PV) power conversion efficiencies (PCEs). However, actual efficiencies today are diminished by the subpar performance of narrow-bandgap subcells. Here we report a strategy to reduce Sn vacancies in mixed Pb–Sn narrow-bandgap perovskites that use metallic tin to reduce the Sn4+ (an oxidation product of Sn2+) to Sn2+ via a comproportionation reaction. We increase, thereby, the charge-carrier diffusion length in narrow-bandgap perovskites to 3 μm for the best materials. We obtain a PCE of 21.1% for 1.22-eV narrow-bandgap solar cells. We fabricate monolithic all-perovskite tandem cells with certified PCEs of 24.8% for small-area devices (0.049 cm2) and of 22.1% for large-area devices (1.05 cm2). The tandem cells retain 90% of their performance following 463 h of operation at the maximum power point under full 1-sun illumination. Improvements in the efficiency and stability of low-bandgap perovskite solar cells are key to enabling all-perovskite solar cells. Here, Lin et al. use metallic tin to prevent oxidation in such low-gap perovskite and demonstrate 24.8%-efficient tandems that are stable for over 400 h under operating conditions.read more
Citations
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Journal ArticleDOI
High-Efficiency Perovskite Solar Cells.
TL;DR: This review summarizes the fundamentals behind the optoelectronic properties of perovskite materials, as well as the important approaches to fabricating high-efficiency perovSKite solar cells, and possible next-generation strategies for enhancing the PCE over the Shockley-Queisser limit are discussed.
Journal ArticleDOI
Monolithic perovskite/silicon tandem solar cell with >29% efficiency by enhanced hole extraction
Amran Al-Ashouri,Eike Köhnen,Bor Li,Artiom Magomedov,Hannes Hempel,Pietro Caprioglio,Pietro Caprioglio,José A. Márquez,Anna Belen Morales Vilches,Ernestas Kasparavicius,Joel A. Smith,Joel A. Smith,Nga Phung,Dorothee Menzel,Max Grischek,Max Grischek,Lukas Kegelmann,Dieter Skroblin,Christian Gollwitzer,Tadas Malinauskas,Marko Jošt,Marko Jošt,Gašper Matič,Bernd Rech,Bernd Rech,Rutger Schlatmann,Rutger Schlatmann,Marko Topič,Lars Korte,Antonio Abate,Bernd Stannowski,Bernd Stannowski,Dieter Neher,Martin Stolterfoht,Thomas Unold,Vytautas Getautis,Steve Albrecht,Steve Albrecht +37 more
TL;DR: A monolithic perovskite/silicon tandem with a certified power conversion efficiency of 29.15% is reported, made possible by a self-assembled, methyl-substituted carbazole monolayer as the hole-selective layer in the perovSKite cell.
Journal ArticleDOI
Solar cell efficiency tables (version 57)
Martin A. Green,Ewan D. Dunlop,Jochen Hohl-Ebinger,Masahiro Yoshita,Nikos Kopidakis,Xiaojing Hao +5 more
Journal ArticleDOI
Solar cell efficiency tables (version 56)
Martin A. Green,Ewan D. Dunlop,Jochen Hohl-Ebinger,Masahiro Yoshita,Nikos Kopidakis,Xiaojing Hao +5 more
Journal ArticleDOI
All-perovskite tandem solar cells with 24.2% certified efficiency and area over 1 cm2 using surface-anchoring zwitterionic antioxidant
Ke Xiao,Renxing Lin,Qiaolei Han,Yi Hou,Zhenyuan Qin,Hieu T. Nguyen,Jin Wen,Mingyang Wei,Vishal Yeddu,Makhsud I. Saidaminov,Yuan Gao,Xin Luo,Y.N. Wang,Han Gao,Chunfeng Zhang,Jun Xu,Jia Zhu,Edward H. Sargent,Hairen Tan +18 more
TL;DR: Xiao et al. as mentioned in this paper used strongly reductive surface-anchoring zwitterionic molecules to suppress Sn2+ oxidation and passivate defects at the grain surfaces in mixed lead-tin perovskite films, enabling an efficiency of 21.7% (certified 20.7%).
References
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Book
CRC Handbook of Chemistry and Physics
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
Journal ArticleDOI
Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells
TL;DR: Two organolead halide perovskite nanocrystals were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells, which exhibit strong band-gap absorptions as semiconductors.
Journal ArticleDOI
Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9%
Hui-Seon Kim,Chang-Ryul Lee,Jeong-Hyeok Im,Ki Beom Lee,Thomas Moehl,Arianna Marchioro,Soo-Jin Moon,Robin Humphry-Baker,Jun-Ho Yum,Jacques-E. Moser,Michael Grätzel,Nam-Gyu Park +11 more
TL;DR: The use of a solid hole conductor dramatically improved the device stability compared to (CH3NH3)PbI3 -sensitized liquid junction cells.
Journal ArticleDOI
Iodide management in formamidinium-lead-halide–based perovskite layers for efficient solar cells
Woon Seok Yang,Byung-wook Park,Eui Hyuk Jung,Nam Joong Jeon,Young Chan Kim,Dong Uk Lee,Seong Sik Shin,Jangwon Seo,Eun Kyu Kim,Jun Hong Noh,Sang Il Seok +10 more
TL;DR: The introduction of additional iodide ions into the organic cation solution, which is used to form the perovskite layers through an intramolecular exchanging process, decreases the concentration of deep-level defects, enabling the fabrication of PSCs with a certified power conversion efficiency.
Journal ArticleDOI
Semiconducting tin and lead iodide perovskites with organic cations: phase transitions, high mobilities, and near-infrared photoluminescent properties.
TL;DR: It is found that the chemical and physical properties of these materials strongly depend on the preparation method, and the properties of the title hybrid materials with those of the "all-inorganic" CsSnI3 and CsPbI3 prepared using identical synthetic methods.