Impact of Dimensionality on Optoelectronic Properties of Hybrid Perovskites

Organometal halides are promising materials for photovoltaic applications, offering tunable electronic levels, excellent charge transport, and simplicity of thin-film device fabrication. Two-dimensional (2D) perovskites have emerged as promising candidates over three-dimensional (3D) ones due to their interesting optical and electrical properties. However, maximizing the power conversion efficiency is a critical issue to improve the performance of these solar cells. In this work, we studied the photophysics of a two-dimensional (2D) perovskite (CH3NH3)2Pb(SCN)2I2 thin film using steady-state and time-resolved absorption and emission spectroscopy and compared it with the three-dimensional (3D) counterpart CH3NH3PbI3. We observed a higher bandgap and faster charge recombination in (CH3NH3)2Pb(SCN)2I2 compared to CH3NH3PbI3. This work provides an improved understanding of fundamental photophysical processes in perovskite structures and provides the guideline for the design, synthesis, and fabrication of solar cells.

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Synthesis of uniform cadmium sulphide thin film by the homogeneous precipitation method on cadmium telluride nanorods and its application in three-dimensional heterojunction flexible solar cells

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2017.05.080 ◽

2017 ◽

Vol 505 ◽

pp. 59-66 ◽

Cited By ~ 5

Author(s):

Jun Wang ◽

Shurong Liu ◽

Yannan Mu ◽

Li Liu ◽

Runa A ◽

...

Keyword(s):

Thin Film ◽

Solar Cells ◽

Cadmium Telluride ◽

Three Dimensional ◽

Cadmium Sulphide ◽

Precipitation Method ◽

Homogeneous Precipitation ◽

Homogeneous Precipitation Method

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Tip-Based Nanomachining on Thin Films: A Mini Review

Nanomanufacturing and Metrology ◽

10.1007/s41871-021-00115-5 ◽

2021 ◽

Author(s):

Shunyu Chang ◽

Yanquan Geng ◽

Yongda Yan

Keyword(s):

Thin Film ◽

Thin Films ◽

Data Storage ◽

Three Dimensional ◽

Maintenance Cost ◽

Two Dimensional ◽

Force Microscopy ◽

Atomic Force ◽

Current State ◽

Two Dimensional Materials

AbstractAs one of the most widely used nanofabrication methods, the atomic force microscopy (AFM) tip-based nanomachining technique offers important advantages, including nanoscale manipulation accuracy, low maintenance cost, and flexible experimental operation. This technique has been applied to one-, two-, and even three-dimensional nanomachining patterns on thin films made of polymers, metals, and two-dimensional materials. These structures are widely used in the fields of nanooptics, nanoelectronics, data storage, super lubrication, and so forth. Moreover, they are believed to have a wide application in other fields, and their possible industrialization may be realized in the future. In this work, the current state of the research into the use of the AFM tip-based nanomachining method in thin-film machining is presented. First, the state of the structures machined on thin films is reviewed according to the type of thin-film materials (i.e., polymers, metals, and two-dimensional materials). Second, the related applications of tip-based nanomachining to film machining are presented. Finally, the current situation of this area and its potential development direction are discussed. This review is expected to enrich the understanding of the research status of the use of the tip-based nanomachining method in thin-film machining and ultimately broaden its application.

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Three-dimensional structure of the buffer/absorber interface in CdS/CuGaSe2 based thin film solar cells

Applied Physics Letters ◽

10.1063/1.3253419 ◽

2009 ◽

Vol 95 (17) ◽

pp. 173502 ◽

Cited By ~ 21

Author(s):

M. Rusu ◽

M. Bär ◽

S. Lehmann ◽

S. Sadewasser ◽

L. Weinhardt ◽

...

Keyword(s):

Thin Film ◽

Solar Cells ◽

Three Dimensional ◽

Thin Film Solar Cells ◽

Dimensional Structure ◽

Three Dimensional Structure

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Two-dimensional GeSe for high performance thin-film solar cells

Journal of Materials Chemistry A ◽

10.1039/c8ta00129d ◽

2018 ◽

Vol 6 (12) ◽

pp. 5032-5039 ◽

Cited By ~ 33

Author(s):

Xingshuai Lv ◽

Wei Wei ◽

Cong Mu ◽

Baibiao Huang ◽

Ying Dai

Keyword(s):

Thin Film ◽

Solar Cells ◽

Schottky Barrier ◽

High Performance ◽

Thin Film Solar Cells ◽

Two Dimensional ◽

Photovoltaic Devices ◽

Promising Candidate

Multilayer GeSe can be a promising candidate for flexible photovoltaic devices because of the low Schottky barrier at the back electrode and high PCE of ∼18%.

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Benzotriazacycle Cored Perylene Diimide Non-fullerene Acceptors for High-performance Organic Solar Cells

Current Applied Materials ◽

10.2174/2666731201666210616114513 ◽

2021 ◽

Vol 01 ◽

Author(s):

Min Deng ◽

Zhenkai Ji ◽

Xiaopeng Xu ◽

Liyang Yu ◽

Qiang Peng

Keyword(s):

Solar Cells ◽

Organic Solar Cells ◽

High Performance ◽

Energy Levels ◽

Three Dimensional ◽

Molecular Structures ◽

Perylene Diimide ◽

Photon Absorption ◽

Optoelectronic Property ◽

Design Synthesis

Background: Perylene diimide (PDI) is among the most investigated non-fullerene electron acceptor for organic solar cells (OSCs). Constructing PDI derivatives into three-dimensional propeller-like molecular structures is not only one of the viable routes to suppress the over aggregation tendency of the PDI chromophores, but also raises possibilities to tune and optimize the optoelectronic property of the molecules. Objective: In this work, we reported the design, synthesis, and characterization of three electron-accepting materials, namely BOZ-PDI, BTZ-PDI, and BIZ-PDI, each with three PDI arms linked to benzotrioxazole, benzotrithiazole, and benzotriimidazole based center cores, respectively. Method: The introduction of electron-withdrawing center cores with heteroatoms does not significantly complicate the synthesis of the acceptor molecules but drastically influences the energy levels of the propeller-like PDI derivatives. Result: The highest power conversion efficiency was obtained with benzoxazole-based BOZ-PDI reaching 7.70% for its higher photon absorption and charge transport ability. Conclusion: This work explores the utilization of electron-withdrawing cores with heteroatoms in the propeller-like PDI derivatives, which provides a handy tool to construct high-performance non-fullerene acceptor materials.

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A two-dimensional modeling of the fine-grained polycrystalline silicon thin-film solar cells

Thin Solid Films ◽

10.1016/s0040-6090(01)01644-3 ◽

2002 ◽

Vol 403-404 ◽

pp. 258-262 ◽

Cited By ~ 17

Author(s):

E Christoffel ◽

M Rusu ◽

A Zerga ◽

S Bourdais ◽

S Noël ◽

...

Keyword(s):

Thin Film ◽

Solar Cells ◽

Polycrystalline Silicon ◽

Thin Film Solar Cells ◽

Two Dimensional ◽

Silicon Thin Film ◽

Fine Grained ◽

Dimensional Modeling

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Porphyrin Assembly with Fullerenes for Photovoltaic Applications

MRS Proceedings ◽

10.1557/proc-1091-aa05-64 ◽

2008 ◽

Vol 1091 ◽

Author(s):

Takashi Sagawa ◽

Osamu Yoshikawa ◽

Hirokuni Jintoku ◽

Makoto Takafuji ◽

Hirotaka Ihara ◽

...

Keyword(s):

Thin Film ◽

Thin Films ◽

Solar Cells ◽

Solar Energy ◽

Conversion Efficiency ◽

Thin Film Solar Cells ◽

Organic Thin Film ◽

Photovoltaic Applications

AbstractMorphologically controllable thin-films of a zinc-containing tetraphenylporphyrin (ZnTPP) combined with an L-glutamide lipid has been fabricated and complexation of ZnTPP with fullerene was examined for organic thin-film solar cells, which gave 3 times enhancement of solar energy-to-electricity conversion efficiency through chlorobenzene-annealing in comparison with the conversion efficiency of untreated one.

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