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GIWAXS

Fine Multi-Phase Alignments in 2D Perovskite Solar Cells with Efficiency over 17% via Slow Post-Annealing

Wu, Guangbao; Li, Xing; Zhou, Jiyu; Zhang, Jianqi; Zhang, Xuning; Leng, Xuanye; Wang, Peijun; Chen, Ming; Zhang, Dongyang; Zhao, Kui; Liu, Shengzhong (Frank); Zhou, Huiqiong; Zhang, Yuan

 ApplicationCharacterizationCustomer publicationsGIWAXSInorganic materialMaterialOrientation analysisOtherRenewable energySurface structure and patternsTechniqueThin films

Fine Multi-Phase Alignments in 2D Perovskite Solar Cells with Efficiency over 17% via Slow Post-Annealing

Wu, Guangbao; Li, Xing; Zhou, Jiyu; Zhang, Jianqi; Zhang, Xuning; Leng, Xuanye; Wang, Peijun; Chen, Ming; Zhang, Dongyang; Zhao, Kui; Liu, Shengzhong (Frank); Zhou, Huiqiong; Zhang, Yuan

Layered Ruddlesden–Popper (RP) phase (2D) halide perovskites have attracted tremendous attention due to the wide tunability on their optoelectronic properties and excellent robustness in photovoltaic devices. However, charge extraction/transport and ultimate power conversion efficiency (PCE) in 2D perovskite solar cells (PSCs) are still limited by the non-eliminable quantum well effect.…
Relation Between Charge Transport and the Number of Interconnected Lamellar Poly(3-Hexylthiophene) Crystals

Wang, Binghua; Chen, Jingbo; Shen, Changyu; Reiter, Günter; Zhang, Bin

 (Natural) polymersApplicationCharacterizationCustomer publicationsGIWAXSMaterialOrientation analysisRenewable energySurface structure and patternsTechnique

Relation Between Charge Transport and the Number of Interconnected Lamellar Poly(3-Hexylthiophene) Crystals

Wang, Binghua; Chen, Jingbo; Shen, Changyu; Reiter, Günter; Zhang, Bin

We have investigated the lateral charge transport in a multilamellar network of crystalline structures of poly(3-hexylthiophene) (P3HT) embedded in a matrix of small crystallites and amorphous polymers resulting from crystallization at temperatures close to the melting point. Removing the matrix by an appropriate washing process allowed us to observe a…
Comprehensive Investigation and Analysis of Bulk-Heterojunction Microstructure of High-Performance PCE11:PCBM Solar Cells

Zhang, Chaohong; Heumueller, Thomas; Gruber, Wolfgang; Almora, Osbel; Du, Xiaoyan; Ying, Lei; Chen, Junwu; Unruh, Tobias; Cao, Yong; Li, Ning; Brabec, Christoph J.

 (Natural) polymersApplicationCharacterizationCrystalline fractionCustomer publicationsGISAXSGIWAXSMaterialOrientation analysisRenewable energySurface structure and patternsTechniqueThin films

Comprehensive Investigation and Analysis of Bulk-Heterojunction Microstructure of High-Performance PCE11:PCBM Solar Cells

Zhang, Chaohong; Heumueller, Thomas; Gruber, Wolfgang; Almora, Osbel; Du, Xiaoyan; Ying, Lei; Chen, Junwu; Unruh, Tobias; Cao, Yong; Li, Ning; Brabec, Christoph J.

Worldwide research efforts have been devoted to organic photovoltaics in the hope of a large-scale commercial application in the near future. To meet the industrial production requirements, organic photovoltaics that can reach power conversion efficiency (PCE) of over 10% along with promising operational device stability are of utmost interest. In…
A top-down strategy identifying molecular phase stabilizers to overcome microstructure instabilities in organic solar cells

Zhang, Chaohong; Heumueller, Thomas; Leon, Salvador; Gruber, Wolfgang; Burlafinger, Klaus; Tang, Xiaofeng; Perea, Jose D.; Wabra, Isabell; Hirsch, Andreas; Unruh, Tobias; Li, Ning; Brabec, Christoph J.

 (Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsGISAXSGIWAXSMaterialRenewable energySurface structure and patternsTechniqueThin films

A top-down strategy identifying molecular phase stabilizers to overcome microstructure instabilities in organic solar cells

Zhang, Chaohong; Heumueller, Thomas; Leon, Salvador; Gruber, Wolfgang; Burlafinger, Klaus; Tang, Xiaofeng; Perea, Jose D.; Wabra, Isabell; Hirsch, Andreas; Unruh, Tobias; Li, Ning; Brabec, Christoph J.

The operational stability of organic solar cells (OSCs) is the essential barrier to commercialization. Compared to thermally-induced degradation, photo-stability of OSCs is far away from being resolved. Here, we demonstrate that the thermal- and photo-degradation of metastable bulk-heterojunction OSCs are governed by the same mechanism. Understanding the fundamental principles behind…
Addition of Monovalent Silver Cations to CH3NH3PbBr3 Produces Crystallographically Oriented Perovskite Thin Films

Siegler, Timothy D.; Zhang, Yangning; Dolocan, Andrei; Reimnitz, Lauren C.; Torabi, Aida; Abney, Michael K.; Choi, Junho; Cossio, Gabriel; Houck, Daniel W.; Yu, Edward T.; Li, Xiaoqin; Harvey, Taylor B.; Milliron, Delia J.; Korgel, Brian A.

 (Natural) polymersApplicationCharacterizationCustomer publicationsGIWAXSMaterialPolymer researchSurface structure and patternsTechnique

Addition of Monovalent Silver Cations to CH3NH3PbBr3 Produces Crystallographically Oriented Perovskite Thin Films

Siegler, Timothy D.; Zhang, Yangning; Dolocan, Andrei; Reimnitz, Lauren C.; Torabi, Aida; Abney, Michael K.; Choi, Junho; Cossio, Gabriel; Houck, Daniel W.; Yu, Edward T.; Li, Xiaoqin; Harvey, Taylor B.; Milliron, Delia J.; Korgel, Brian A.

The incorporation of monovalent silver (Ag+) cations into methylammonium lead bromide (CH3NH3PbBr3) perovskite films leads to a strongly preferred (001) crystallographic orientation on a wide variety of substrates, ranging from glass to mesoporous TiO2. CH3NH3PbBr3 films deposited without Ag+ exhibit only a weakly preferred (011) orientation. Compositional maps and depth…
Controlling Processing, Morphology, and Mechanical Performance in Blends of Polylactide and Thermotropic Polyesters

de Kort, Gijs W.; Rastogi, Sanjay; Wilsens, Carolus H. R. M.

 ApplicationCharacteristic dimensionCharacterizationCustomer publicationsGIWAXSInorganic materialMaterialRenewable energyTechniqueThin films

Controlling Processing, Morphology, and Mechanical Performance in Blends of Polylactide and Thermotropic Polyesters

de Kort, Gijs W.; Rastogi, Sanjay; Wilsens, Carolus H. R. M.

Thermoplastic composites based on thermotropic liquid crystalline polymer (LCP) materials are interesting candidates for reinforced composite application due to their promising mechanical performance and potential for recyclability. In combination with a societal push toward the more sustainable use of materials, these properties warrant new interest in this class of composites.…
Room-Temperature Meniscus Coating of >20% Perovskite Solar Cells: A Film Formation Mechanism Investigation

Hu, Hanlin; Ren, Zhiwei; Fong, Patrick W. K.; Qin, Minchao; Liu, Danjun; Lei, Dangyuan; Lu, Xinhui; Li, Gang

 ApplicationCharacterizationCustomer publicationsGIWAXSInorganic materialMaterialRenewable energySizeSurface structure and patternsTechniqueThin films

Room-Temperature Meniscus Coating of >20% Perovskite Solar Cells: A Film Formation Mechanism Investigation

Hu, Hanlin; Ren, Zhiwei; Fong, Patrick W. K.; Qin, Minchao; Liu, Danjun; Lei, Dangyuan; Lu, Xinhui; Li, Gang

Perovskite solar cells (PSCs) are ideally fabricated entirely via a scalable solution process at low temperatures to realize the promise of simple manufacturing, low-cost processing, compatibility with flexible substrates, and perovskite-based tandem solar cells. However, high-quality photoactive perovskite thin films under those processing conditions is a challenge. Here, a laminar…
Two-dimensional inverted planar perovskite solar cells with efficiency over 15% via solvent and interface engineering

Lian, Xiaomei; Chen, Jiehuan; Zhang, Yingzhu; Tian, Shuoxun; Qin, Minchao; Li, Jun; Andersen, Thomas Rieks; Wu, Gang; Lu, Xinhui; Chen, Hongzheng

 ApplicationCharacterizationCustomer publicationsGIWAXSInorganic materialMaterialOrientation analysisRenewable energySurface structure and patternsTechniqueThin films

Two-dimensional inverted planar perovskite solar cells with efficiency over 15% via solvent and interface engineering

Lian, Xiaomei; Chen, Jiehuan; Zhang, Yingzhu; Tian, Shuoxun; Qin, Minchao; Li, Jun; Andersen, Thomas Rieks; Wu, Gang; Lu, Xinhui; Chen, Hongzheng

High short-circuit current (Jsc) and open-circuit voltage (Voc) are both required for two-dimensional (2D) perovskite solar cells (PVSCs) with high power conversion efficiency (PCE). In this work, solvent engineering is combined with interface engineering to fabricate 2D PVSCs with enhanced Jsc and Voc. Mixing formamide with N,N-dimethylformamide (DMF) was found…
Tailoring vertical phase distribution of quasi-two-dimensional perovskite films via surface modification of hole-transporting layer

Liu, Tiefeng; Jiang, Youyu; Qin, Minchao; Liu, Junxue; Sun, Lulu; Qin, Fei; Hu, Lin; Xiong, Sixing; Jiang, Xueshi; Jiang, Fangyuan; Peng, Ping; Jin, Shengye; Lu, Xinhui; Zhou, Yinhua

 ApplicationCharacterizationCustomer publicationsGIWAXSInorganic materialMaterialRenewable energySurface structure and patternsTechniqueThin films

Tailoring vertical phase distribution of quasi-two-dimensional perovskite films via surface modification of hole-transporting layer

Liu, Tiefeng; Jiang, Youyu; Qin, Minchao; Liu, Junxue; Sun, Lulu; Qin, Fei; Hu, Lin; Xiong, Sixing; Jiang, Xueshi; Jiang, Fangyuan; Peng, Ping; Jin, Shengye; Lu, Xinhui; Zhou, Yinhua

Vertical phase distribution plays an important role in the quasi-two-dimensional perovskite solar cells. So far, the driving force and how to tailor the vertical distribution of layer numbers have been not discussed. In this work, we report that the vertical distribution of layer numbers in the quasi-two-dimensional perovskite films deposited…
Fused thienobenzene-thienothiophene electron acceptors for organic solar cells

Xu, Ye; Jiang, Haotian; Lau, Tsz-Ki; Zhu, Jingshuai; Wang, Jiayu; Lu, Xinhui; Zhan, Xiaowei; Lin, Yuze

 (Natural) polymersApplicationCharacterizationCustomer publicationsGIWAXSMaterialOrientation analysisRenewable energySurface structure and patternsTechniqueThin films

Fused thienobenzene-thienothiophene electron acceptors for organic solar cells

Xu, Ye; Jiang, Haotian; Lau, Tsz-Ki; Zhu, Jingshuai; Wang, Jiayu; Lu, Xinhui; Zhan, Xiaowei; Lin, Yuze

Small molecule ladder-type heteroarenes IHBT-2F is designed and synthesized with strong electron-donating and molecular packing properties, where the central unit, fused thienobenzene-thienothiphene (IHBT), is attached with the strong electron-deficient 2-(5,6-difluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (2FIC) as the end group. The counterpart IDBT-2F with…
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