Publication
Enhanced Interfacial Binding and Electron Extraction Using Boron-Doped TiO2 for Highly Efficient Hysteresis-Free Perovskite Solar Cells
Publications associées (54)
The Status Quo of Rashba Phenomena in Organic-Inorganic Hybrid Perovskites
In this Perspective, we address the fundamentals and possible implications of Rashba phenomena particularly for noncentrosymmetric and heavy element-containing hybrid perovskite systems. The work sheds light on the application paradigm of these exciting ph ...
AMER CHEMICAL SOC2021Gradient band structure: high performance perovskite solar cells using poly(bisphenol A anhydride-co-1,3-phenylenediamine)
Mohammad Khaja Nazeeruddin, Hiroyuki Kanda, Sanghyun Paek, Aron Joel Huckaba, Albertus Adrian Sutanto, Hobeom Kim, Nadja Isabelle Desiree Klipfel, Ryuji Kaneko
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 SOC CHEMISTRY2020Interfacial and bulk properties of hole transporting materials in perovskite solar cells: spiro-MeTAD versus spiro-OMeTAD
Michael Graetzel, Shaik Mohammed Zakeeruddin, Ulf Anders Hagfeldt, Elham Halvani Anaraki, Mona Shasti
Two spiro-MeTAD compounds (1 and 2) were synthesized, characterized by experimental and quantum mechanical methods, and used as hole transporting materials (HTMs) in perovskite solar cells (PSCs). The new compounds differ from spiro-OMeTAD only by the pres ...
2020A hysteresis-free perovskite transistor with exceptional stability through molecular cross-linking and amine-based surface passivation
Mohammad Khaja Nazeeruddin, Peng Gao, Hobeom Kim
Organo-metal halide perovskite field-effect transistors present serious challenges in terms of device stability and hysteresis in the current-voltage characteristics. Migration of ions located at grain boundaries and surface defects in the perovskite film ...
ROYAL SOC CHEMISTRY2020Template-Assisted Formation of High-Quality alpha-Phase HC(NH2)(2)PbI3 Perovskite Solar Cells
Mohammad Khaja Nazeeruddin, Yong Ding, Xuehui Liu, Cheng Liu
Formamidinium (FA) lead halide (alpha-FAPbI(3)) perovskites are promising materials for photovoltaic applications because of their excellent light harvesting capability (absorption edge 840 nm) and long carrier diffusion length. However, it is extremely di ...
2019Saddle-like, π-conjugated, cyclooctatetrathiophene-based, hole-transporting material for perovskite solar cells
Mohammad Khaja Nazeeruddin, Iwan Zimmermann, Giulia Grancini, Inés Garcia Benito, Javier Urieta Mora
A flexible, saddle-like, π-conjugated skeleton composed of four fused thiophene rings forming a cyclooctatetrathiophene (CoTh) with four triphenylamines (CoTh-TTPA) is presented as a hole-transporting material (HTM) for perovskite solar cells. The new HTM ...
2019Phthalocyanines and porphyrinoid analogues as hole- and electron-transporting materials for perovskite solar cells
Organic-inorganic lead halide perovskite absorbers in combination with electron and hole transporting selective contacts result in power conversion efficiencies of over 23% under AM 1.5 sun conditions. The advantage of perovskite solar cells is their simpl ...
2019Multiarm and Substituent Effects on Charge Transport of Organic Hole Transport Materials
Mohammad Khaja Nazeeruddin, Kevin Sivula, Liang Yao, Antonio Prlj, Kun-Han Lin, Nikita Drigo, Han-Hee Cho
We explore several potential dopant-free triphenylamine-based hole transport materials for perovskite solar cells by combining two design strategies: (1) incorporation of multiple arms for mobility enhancement and (2) including Lewis bases that assist in d ...
2019Air-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 ...
2019Molecularly Engineered Hole Transporting Materials for High Performance Perovskite Solar Cells
Perovskite solar cells have rapidly revolutionized the photovoltaic research showing an im-pressively dynamic progress on power conversion efficiency from 3.8 to 22% in only several years, a record for a nascent technology. Furthermore, inexpensive precurs ...
EPFL2018