Journal ArticleDOI
Small molecule semiconductors for high-efficiency organic photovoltaics
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TLDR
This review summarizes the developments in small molecular donors, acceptors, and donor-acceptor dyad systems for high-performance multilayer, bulk heterojunction, and single-component OPVs and focuses on correlations of molecular chemical structures with properties, such as absorption, energy levels, charge mobilities, and photovoltaic performances.Abstract:
Organic photovoltaic cells (OPVs) are a promising cost-effective alternative to silicon-based solar cells, and possess light-weight, low-cost, and flexibility advantages. Significant progress has been achieved in the development of novel photovoltaic materials and device structures in the last decade. Nowadays small molecular semiconductors for OPVs have attracted considerable attention, due to their advantages over their polymer counterparts, including well-defined molecular structure, definite molecular weight, and high purity without batch to batch variations. The highest power conversion efficiencies of OPVs based on small molecular donor/fullerene acceptors or polymeric donor/fullerene acceptors are up to 6.7% and 8.3%, respectively, and meanwhile nonfullerene acceptors have also exhibited some promising results. In this review we summarize the developments in small molecular donors, acceptors (fullerene derivatives and nonfullerene molecules), and donor–acceptor dyad systems for high-performance multilayer, bulk heterojunction, and single-component OPVs. We focus on correlations of molecular chemical structures with properties, such as absorption, energy levels, charge mobilities, and photovoltaic performances. This structure–property relationship analysis may guide rational structural design and evaluation of photovoltaic materials (253 references).read more
Citations
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Journal ArticleDOI
Green-Sensitive Organic Photodetectors with High Sensitivity and Spectral Selectivity Using Subphthalocyanine Derivatives
Kwang Hee Lee,Dong-Seok Leem,Jeffrey S. Castrucci,Kyung-Bae Park,Xavier Bulliard,Kyu-Sik Kim,Yong Wan Jin,Sang Yoon Lee,Timothy P. Bender,Soo Young Park +9 more
TL;DR: Green-sensitive organic photodetectors with high sensitivity and spectral selectivity using boron subphthalocyanine chloride (SubPc) derivatives are reported and the photoresponsivity of the OPD devices was found to be consistent with their absorptance.
Journal ArticleDOI
Thiophene-Based Organic Semiconductors
TL;DR: Thiophene-based π-conjugated organic small molecules and polymers, which are classified in terms of their chemical structures and their structure–property relationships, are addressed for the potential applications as organic photovoltaics (OPVs), organic field-effect transistors (OFETs) and organic light emitting diodes (OLEDs).
Journal ArticleDOI
Carbon‐Based Photocathode Materials for Solar Hydrogen Production
TL;DR: An in-depth evaluation of the state-of-the-art fabrication of photocathodes through scalable, high-troughput, cost-effective methods is presented and the major aspects on the development of light-trapping nanostructured architectures are addressed.
Journal ArticleDOI
D–π–A–π–D type benzothiadiazole–triphenylamine based small molecules containing cyano on the π-bridge for solution-processed organic solar cells with high open-circuit voltage
Shaohang Zeng,Lunxiang Yin,Changyan Ji,Changyan Ji,Xueying Jiang,Kechang Li,Yanqin Li,Yue Wang +7 more
TL;DR: Two novel D- π-A-π-D structured small molecules composed of benzothiadiazole and triphenylamine were designed and synthesized and exhibited a deep HOMO energy level and impressive V(OC) levels.
Journal ArticleDOI
Pseudohalide‐Induced 2D (CH3NH3)2PbI2(SCN)2 Perovskite for Ternary Resistive Memory with High Performance
Xue-Feng Cheng,Xiang Hou,Jin Zhou,Bi-Jun Gao,Jinghui He,Hua Li,Qingfeng Xu,Najun Li,Dongyun Chen,Jianmei Lu +9 more
TL;DR: This work paves way for stable perovskite multilevel RRAMs in ambient atmosphere by achieving ternary resistive memory with three states based on OIHP with high device yield and good endurance properties.
References
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Journal ArticleDOI
C 60 : Buckminsterfullerene
Harold W. Kroto,Harold W. Kroto,James R. Heath,Sean C. O'Brien,Robert F. Curl,Richard E. Smalley +5 more
TL;DR: In this article, the authors proposed a truncated icosahedron, a polygon with 60 vertices and 32 faces, 12 of which are pentagonal and 20 hexagonal.
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Polymer photovoltaic cells : enhanced efficiencies via a network of internal donor-acceptor heterojunctions
TL;DR: In this paper, the carrier collection efficiency and energy conversion efficiency of polymer photovoltaic cells were improved by blending of the semiconducting polymer with C60 or its functionalized derivatives.
Journal ArticleDOI
Conjugated polymer-based organic solar cells
TL;DR: This review gives a general introduction to the materials, production techniques, working principles, critical parameters, and stability of the organic solar cells, and discusses the alternative approaches such as polymer/polymer solar cells and organic/inorganic hybrid solar cells.
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Two‐layer organic photovoltaic cell
TL;DR: In this paper, a two-layer organic photovoltaic cell was fabricated from copper phthalocyanine and a perylene tetracarboxylic derivative, achieving a power conversion efficiency of about 1% under simulated AM2 illumination.
Journal ArticleDOI
Photoinduced electron transfer from a conducting polymer to buckminsterfullerene.
TL;DR: Because the photoluminescence in the conducting polymer is quenched by interaction with C60, the data imply that charge transfer from the excited state occurs on a picosecond time scale.