Article
Chemistry, Physical
Qun Gu, Jie Wang, Ruixiang Peng, Wei Song, Rong Zhou, Ziyi Ge
Summary: In this study, a composite layer of V2C/PEDOT:PSS is prepared, which has a lower work function and higher conductivity than pure PEDOT:PSS films. The improved Ohmic contact between the active layer and electrode leads to enhanced efficiency of organic solar cells.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Yi-Chun Chin, Matyas Daboczi, Charlie Henderson, Joel Luke, Ji-Seon Kim
Summary: PEDOT: PSS is widely used in perovskite solar cells as a hole transport layer due to its processability, scalability, and commercialization potential. However, PSCs utilizing PEDOT: PSS suffer from recombination losses. In this study, dedoping PEDOT: PSS and optimizing its layer thickness improved the device's performance by reducing recombination losses at the interface.
ACS ENERGY LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Yuying Wang, Na Li, Mengqi Cui, Yuting Li, Xia Tian, Xijie Xu, Qikun Rong, Dong Yuan, Guofu Zhou, Li Nian
Summary: In this study, WS2 nanosheets were doped into PEDOT:PSS as an efficient hole transport layer for organic solar cells, leading to improved performance. The PEDOT:PSS:WS2 NS anode interlayer showed higher work function, reduced roughness, and improved hole mobility, resulting in enhanced hole extraction and transportation, as well as improved fill factor and short-circuit current density in the devices. The power conversion efficiency (PCE) increased from 14.35% to 15.67% with WS2 NS doping based on PM6:Y6.
ORGANIC ELECTRONICS
(2021)
Review
Chemistry, Multidisciplinary
Xuning Zhang, Hong Zhang, Yanxun Li, Saud-uz Zafar, Shuo Yang, Jianhui Chen, Huiqiong Zhou, Yuan Zhang
Summary: Organic solar cells (OSCs) have experienced rapid improvement in power conversion efficiency (PCE) due to advances in materials and device engineering. The choice of buffer layer materials for interface charge transport and collection is critical to optimize PCE. While hole transport layers (HTLs) have received less attention compared to electron transport layers (ETLs), the commercial material PEDOT:PSS has limitations for efficiency and stability enhancement. This review summarizes recent progress in HTL materials, including modifications to PEDOT:PSS and alternative materials based on polymers and inorganic oxides, and provides an outlook on the possibilities and challenges in this field.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Fei Jin, Ruixiang Peng, Yi Qiu, Jinna Zhang, Ziyi Ge
Summary: This study improves the commonly used HTL material PEDOT:PSS by adding HxMoO3, which enhances charge carrier transport and device stability. The results demonstrate that the hybrid HTL can increase device efficiency and environmental stability.
ACS APPLIED ENERGY MATERIALS
(2023)
Review
Polymer Science
Mohamed M. H. Desoky, Matteo Bonomo, Nadia Barbero, Guido Viscardi, Claudia Barolo, Pierluigi Quagliotto
Summary: Perovskite solar cells have achieved impressive efficiency in a short period, but long-term stability remains a challenge due to doping of the Hole Transporting Material. Research focuses on stable dopant-free HTMs, which show promising efficiency and stability without the need for additional dopants. These polymers have attractive properties such as filming ability, tunability in molecular weight, and high hole mobility, making them a significant innovation in the field.
Article
Nanoscience & Nanotechnology
Ming Liu, Mengyang Li, Yufeng Jiang, Zaifei Ma, Duanzijing Liu, Zhongjie Ren, Thomas P. Russell, Yao Liu
Summary: Conductive ionenes were synthesized by integrating donor and acceptor compounds, optimizing film properties through varying ratios, and enhancing pi-pi interactions. These materials significantly modify electrode interfaces, boosting efficiency particularly in organic solar cells with a range of interlayer thicknesses, achieving high power conversion efficiencies.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Spectroscopy
Waqar Ali Zahid, Waqas Akram, Muhammad Fiaz Ahmad, Saleem Iqbal, Shaimaa A. M. Abdelmohsen, Meznah M. Alanazi, Abraham Elmushyakhi, Ismail Hossain, Javed Iqbal
Summary: In this study, highly efficient organic hole-transporting materials (HTMs) were designed using Schiff base chemistry by modifying a phenothiazine-based core with triphenylamine through end-capped acceptor engineering via thiophene linkers. The designed HTMs exhibited superior planarity and attractive forces, improving the charge transport behavior and efficiency of perovskite solar cells. They also showed high solubility and enhanced power conversion efficiency and open-circuit voltage compared to the reference molecule.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Engineering, Chemical
Md Maniruzzaman, Rahim Abdur, Md Abdul Kuddus Sheikh, Son Singh, Jaegab Lee
Summary: Research optimized the performance of the MoO3-PEDOT:PSS composite layer in ITO-free organic solar cells, improving electrical conductivity, interfacial contact quality, work function, and process wettability. The results showed that the composite layer can protect MoO3 and enhance device efficiency.
Article
Chemistry, Applied
M. M. Tepliakova, I. E. Kuznetsov, D. S. Zamoretskov, A. N. Zhivchikova, A. V. Lolaeva, M. A. Sandzhieva, S. V. Makarov, M. V. Klyuev, D. K. Sagdullina, E. O. Perepelitsina, Y. G. Gladush, A. G. Nasibulin, K. J. Stevenson, A. V. Akkuratov, A. D. Furasova
Summary: Conjugated polymers based on benzodithiophene (BDT) and thiophene-flanked thiazolothiazole block (Tz) were designed and studied as promising hole-transport materials (HTMs) for perovskite solar cells (PSCs). The position of side chain greatly affects their performance, and the polymer in-BDTTz showed higher power conversion efficiency and stable operation compared to aus-BDTTz and poly(triarylamine) (PTAA). These alkylsilyl-substituted benzodithiophene-based polymers could be potential dopant-free hole-transport materials for efficient and stable perovskite photovoltaics.
Review
Chemistry, Multidisciplinary
Cinthya Anrango-Camacho, Karla Pavon-Ipiales, Bernardo A. Frontana-Uribe, Alex Palma-Cando
Summary: This review examines the recent advancements in metal oxides, metal sulfides, nanocarbon materials, conducting polymers, and small organic molecules as hole transporting layers (HTLs) in organic solar cells (OSCs) over the past five years. The preparation and deposition methods of HTLs have been optimized, and strategies such as doping, composite/hybrid formation, and modifications have been utilized to tune the optical/electrical properties of these materials for efficient and stable OSCs.
Article
Polymer Science
Qi Bin Ke, Jia-Ren Wu, Chia-Chen Lin, Sheng Hsiung Chang
Summary: The power conversion efficiencies of metal-oxide-based regular perovskite solar cells have been consistently higher than 25% for over 2 years, while polymer-based inverted perovskite solar cells have lower efficiencies below 23%. To improve the efficiency of inverted perovskite solar cells, it is important to understand the effects of polymer-modified ITO/glass substrates on the optoelectronic properties and the formation of perovskite crystalline thin films.
Review
Engineering, Chemical
Sihan Li, Yuxuan Yang, Kuo Su, Bao Zhang, Yaqing Feng
Summary: Perovskite solar cells have gained attention in the photovoltaic industry due to their high power conversion efficiency. However, limitations such as high cost and perovskite degradation have impeded their development and practical application. This article focuses on the need for dopant-free hole transport materials (HTMs) and highlights the growing interest in HTMs based on triphenylamine (TPA-HTMs) for their high hole mobility, film formation ability, and suitable energy levels. The literature reviewed here summarizes the correlations between performance and structure of TPA-HTMs and provides insights into their future development trends.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Polymer Science
Jae Woong Jung, Seung Hwan Son, Jun Choi
Summary: The study demonstrates that the polyaniline composite film has enhanced electrical conductivity and suitable energy level matching with CH3NH3PbI3 to improve the photovoltaic properties of the device. The composite film-based devices achieved a maximum efficiency of 16.61%, which is 21.6% higher than the device with pristine polyaniline. Additionally, the reduced graphene oxide-based composite film showed superior long-term stability compared to the pristine polyaniline-based device, indicating great potential for high performance perovskite solar cells.
Article
Nanoscience & Nanotechnology
Haijun Bin, Kunal Datta, Junke Wang, Tom P. A. van der Pol, Junyu Li, Martijn M. Wienk, Rene A. J. Janssen
Summary: Interface engineering for hole extraction in organic solar cells has received little attention, but this study shows that by fine-tuning the chemical structure of carbazole-based self-assembled monolayers, improved performance can be achieved compared to the archetypal PEDOT:PSS material.
ACS APPLIED MATERIALS & INTERFACES
(2022)
