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Cristina Roldán Carmona

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Related publications (44)

D-pi-A-Type Triazatruxene-Based Dopant-Free Hole Transporting Materials for Efficient and Stable Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Sanghyun Paek, Cristina Roldán Carmona, Kasparas Rakstys, Hiroyuki Kanda, Hobeom Kim, Cansu Igci

Three donor-pi-bridge-acceptor (D-pi-A)-type organic small molecules coded CI-B1, CI-B2, and CI-B3 are designed, synthesized, and used as dopant-free hole transporting materials (HTMs) for perovskite solar cells (PSCs). The strong electron-donating triazat ...

WILEY-V C H VERLAG GMBH2020

Gradient band structure: high performance perovskite solar cells using poly(bisphenol A anhydride-co-1,3-phenylenediamine)

Mohammad Khaja Nazeeruddin, Sanghyun Paek, Cristina Roldán Carmona, Hiroyuki Kanda, Aron Joel Huckaba, Albertus Adrian Sutanto, Hobeom Kim, Nadja Isabelle Desiree Klipfel, Ryuji Kaneko, Mousa Abdulla M E Abuhelaiqa

Surface passivation is a critical factor for improving the photovoltaic performance of perovskite solar cells. However, more robust principle investigations are required to build effective passivation strategies enabling high-performance perovskite solar c ...

Royal Society of Chemistry2020

Band-bending induced passivation: high performance and stable perovskite solar cells using a perhydropoly(silazane) precursor

Mohammad Khaja Nazeeruddin, Mounir Driss Mensi, Yi Zhang, Sanghyun Paek, Giulia Grancini, Yonghui Lee, Kyung Taek Cho, Cristina Roldán Carmona, Hiroyuki Kanda, Aron Joel Huckaba

Surface passivation of the perovskite photo absorber is a key factor to improve the photovoltaic performance. So far robust passivation strategies have not yet been revealed. Here, we demonstrate a successful passivation strategy which controls the Fermi-l ...

2020

Benzothiadiazole Aryl-amine Based Materials as Efficient Hole Carriers in Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Cristina Roldán Carmona, Manuel Alejandro Méndez Agudelo, Cristina Rodriguez Seco

Four hole transport materials (HTMs) based on a benzothiadiazole (BT) central core have been synthesized and successfully employed in triple-cation mixed-halide perovskite solar cells (PSCs), reaching 18.05% solar to energy conversion efficiency. The synth ...

AMER CHEMICAL SOC2020

Doped but Stable: Spirobisacridine Hole Transporting Materials for Hysteresis-Free and Stable Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Pascal Alexander Schouwink, Anne-Clémence Corminboeuf, Sanghyun Paek, Cristina Roldán Carmona, Albertus Adrian Sutanto, Hobeom Kim, Marius Franckevicius, Kun-Han Lin, Nikita Drigo

Four spirobisacridine (SBA) hole-transporting materials were synthesized and employed in perovskite solar cells (PSCs). The molecules bear electronically inert alkyl chains of different length and bulkiness, attached to in-plane N atoms of nearly orthogona ...

AMER CHEMICAL SOC2020

Minimization of Carrier Losses for Efficient Perovskite Solar Cells through Structural Modification of Triphenylamine Derivatives

Mohammad Khaja Nazeeruddin, Manuel Alejandro Méndez Agudelo, Cristina Roldán Carmona, Cristina Rodriguez Seco

Three hole transport materials (HTMs) based on a substituted triphenylamine moiety have been synthesized and successfully employed in triple-cation mixed-halide PSCs, reaching efficiencies of 19.4 %. The efficiencies, comparable to those obtained using spi ...

Wiley-VCH Verlag GmbH2020

Co-evaporation as an optimal technique towards compact methylammonium bismuth iodide layers

Mohammad Khaja Nazeeruddin, Mounir Driss Mensi, Cristina Roldán Carmona, Hiroyuki Kanda, Albertus Adrian Sutanto, Maria Cristina Momblona Rincón

the most studied perovskite‑based solar cells reported up to date contain the toxic lead in its composition. photovoltaic research and development towards non‑toxic, lead‑free perovskite solar cells are critical to finding alternatives to reduce human heal ...

Nature Research2020

Molecular Design and Operational Stability: Toward Stable 3D/2D Perovskite Interlayers

Mohammad Khaja Nazeeruddin, Pascal Alexander Schouwink, Anne-Clémence Corminboeuf, Sanghyun Paek, Kyung Taek Cho, Cristina Roldán Carmona, Hiroyuki Kanda, Marius Franckevicius, Hobeom Kim, Kun-Han Lin

Despite organic/inorganic lead halide perovskite solar cells becoming one of the most promising next-generation photovoltaic materials, instability under heat and light soaking remains unsolved. In this work, a highly hydrophobic cation, perfluorobenzylamm ...

2020

Air-Stable n-i-p Planar Perovskite Solar Cells Using Nickel Oxide Nanocrystals as Sole Hole-Transporting Material

Mohammad Khaja Nazeeruddin, Cristina Roldán Carmona

Development of low-cost solution processable inorganic hole-transporting materials (HTM) in n-i-p perovskite solar cells (PSCs) is still a challenge toward stable and cost-effective devices. Here, we report the synthesis, surface functionalization, and app ...

2019

Optoelectronic device comprising guanidinium in the organic-inorganic perovskite

Mohammad Khaja Nazeeruddin, Cristina Roldán Carmona

Organic-inorganic lead halide perovskites have shown impressive power conversion efficiency (PCE) in a range of solar cell architectures. Despite the multiple ionic compositions that have been reported so far, the presence of organic constituents is an ess ...

2019

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Gradient band structure: high performance perovskite solar cells using poly(bisphenol A anhydride-co-1,3-phenylenediamine)

Royal Society of Chemistry2020

Benzothiadiazole Aryl-amine Based Materials as Efficient Hole Carriers in Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Cristina Roldán Carmona, Manuel Alejandro Méndez Agudelo, Cristina Rodriguez Seco

AMER CHEMICAL SOC2020

Minimization of Carrier Losses for Efficient Perovskite Solar Cells through Structural Modification of Triphenylamine Derivatives

Mohammad Khaja Nazeeruddin, Manuel Alejandro Méndez Agudelo, Cristina Roldán Carmona, Cristina Rodriguez Seco

Wiley-VCH Verlag GmbH2020

D-pi-A-Type Triazatruxene-Based Dopant-Free Hole Transporting Materials for Efficient and Stable Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Sanghyun Paek, Cristina Roldán Carmona, Kasparas Rakstys, Hiroyuki Kanda, Hobeom Kim, Cansu Igci

WILEY-V C H VERLAG GMBH2020

Band-bending induced passivation: high performance and stable perovskite solar cells using a perhydropoly(silazane) precursor

Mohammad Khaja Nazeeruddin, Mounir Driss Mensi, Yi Zhang, Sanghyun Paek, Giulia Grancini, Yonghui Lee, Kyung Taek Cho, Cristina Roldán Carmona, Hiroyuki Kanda, Aron Joel Huckaba

2020