Perovskite solar cells (PSCs) are promising alternatives toward clean energy because of their high-power conversion efficiency (PCE) and low materials and processing cost. However, their poor stability under operation still limits their practical applicati ...

2018

Tuning electronic structures of thiazolo [5,4-d] thiazole-based hole-transporting materials for efficient perovskite solar cells

Mohammad Khaja Nazeeruddin

2018

Design of cyclopentadithiophene-based small organic molecules as hole selective layers for perovskite solar cells

Mohammad Khaja Nazeeruddin, Iwan Zimmermann, Laura Calio

Thiophene-based p-type molecules are being extensively investigated and employed in optoelectronic devices due to their intriguing semiconducting properties. Herein, we report the synthesis and characterization of a 4H-cyclopenta[1,2-b: 5,4-b']dithiophene- ...

ROYAL SOC CHEMISTRY2018

Frontiers, opportunities, and challenges in perovskite solar cells: A critical review

Mohammad Khaja Nazeeruddin

The breakthrough discovery of organic-inorganic hybrid perovskite materials for converting solar energy into electrical energy has revolutionized the third generation photovoltaic devices. Within less than half a decade of rigorous research and development ...

ELSEVIER SCIENCE BV2018

All that glitters is not gold: Recent progress of alternative counter electrodes for perovskite solar cells

Mohammad Khaja Nazeeruddin, Peng Gao, Xing Li

Although ultrahigh power conversion efficiency (PCE) up to 22.7% has been achieved by solution-processable perovskite solar cells (PSCs), there are still some obstacles that hinder the way of this promising photovoltaic technology to its commercialization. ...

Elsevier2018

A Facile Preparative Route of Nanoscale Perovskites over Mesoporous Metal Oxide Films and Their Applications to Photosensitizers and Light Emitters

Mohammad Khaja Nazeeruddin, Emad Oveisi, Valentin Ianis Emmanuel Queloz, Yonghui Lee, Kyung Taek Cho, Sanghyun Paek, Iwan Zimmermann, Aron Joel Huckaba, Giulia Grancini, So-Min Yoo

By two‐step sequential Pb2+ adsorption and reaction with methylammonium‐iodide (MAI) or ‐bromide (MABr) at a low concentration level of 0.06–0.10 m over mesoporous TiO2 or ZrO2 film, a well‐defined nanoscale CH3NH3PbI3 (MAPbI3) photosensitizer or CH3NH3PbB ...

2018

Dimensionality engineering of hybrid halide perovskite light absorbers

Mohammad Khaja Nazeeruddin, Peng Gao

Hybrid halide perovskite solar cells were first demonstrated in 2009 with cell efficiency quickly soaring from below 10% to more than 23% in a few years. Halide perovskites have the desirable processing simplicity but are very fragile when exposed to water ...

Nature Publishing Group2018

A new cross-linkable 9,10-diphenylanthracene derivative as a wide bandgap host for solution-processed organic light-emitting diodes

Mohammad Khaja Nazeeruddin, Aron Joel Huckaba

Efficient organic light-emitting diodes (OLEDs) can be obtained using multilayered architectures where the processes of charge injection, transport and recombination are separated and optimized in each layer. Processing these structures from solution requi ...

Royal Society of Chemistry2018

Charge-Transporting Materials for Perovskite Solar Cells

Mohammad Khaja Nazeeruddin

The power conversion efficiency of perovskite solar cells (PSCs) has been certified as a-22.1%, approaching the best single crystalline silicon solar cells. The improvement in the performance of PSCs could be achieved through the testing of novel materials ...

ELSEVIER ACADEMIC PRESS INC2018

Intercalation makes the difference with TiS2: Boosting electrocatalytic water oxidation activity through Co intercalation

Mohammad Khaja Nazeeruddin, Emad Oveisi, Kyung Taek Cho, Aron Joel Huckaba

Intercalated and unmodified TiS2 nanomaterials were synthesized and characterized by UV-Visible-NIR spectroscopy, Powder X-Ray Diffraction, and X-Ray Photoelectron and Ultraviolet Photoelectron Spectroscopy. Photoelectron spectroscopy measurements indicate ...

2018

Trash into Treasure: δ-FAPbI3 Polymorph Stabilized MAPbI3 Perovskite with Power Conversion Efficiency beyond 21%

Mohammad Khaja Nazeeruddin, Emad Oveisi, Peng Gao, Yi Zhang, Zhipeng Li

Effective passivation and stabilization of both the inside and interface of a perovskite layer are crucial for perovskite solar cells (PSCs), in terms of efficiency, reproducibility, and stability. Here, the first formamidinium lead iodide (δ-FAPbI3) polym ...

Wiley2018

Analysis of Photocarrier Dynamics at Interfaces in Perovskite Solar Cells by Time-Resolved Photoluminescence

Mohammad Khaja Nazeeruddin, Giulia Grancini

The power conversion efficiency of perovskite solar cells is drastically affected by photocarrier dynamics at the interfaces. Experimental measurements show quenching of the photoluminescence (PL) signal from the perovskite layer when it is capped with a h ...

2018

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