Effect of interface modification in polymer solar cells: An in-depth investigation of the structural variation of organic dye for interlayer material

Jeong, Mijin; Jin, Ho Cheol; Lee, Jun Ho; Moon, Doo Kyung; Kim, Joo Hyun

doi:10.1016/j.dyepig.2019.107927

Cited by 20 publications

(5 citation statements)

References 53 publications

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“…The electron-only devices with the structure ITO/ZnO or SM/Y6BO/Al were fabricated to estimate the electron mobilities of the devices. We used the space-charge-limited current (SCLC) technique to calculate the electron mobilities according to the Mott–Gurney formula . The features of SCLC can be seen in the electric field and current density beyond the built-in voltage (Figure S7).…”

Section: Resultsmentioning

confidence: 99%

“…We used the space-charge-limited current (SCLC) technique to calculate the electron mobilities according to the Mott−Gurney formula. 47 The features of SCLC can be seen in the electric field and current density beyond the built-in voltage (Figure S7). Similar to the electron cm −2 V −1 s −1 , respectively.…”

Section: Interfacial Properties Of Ito Modified With Smsmentioning

confidence: 99%

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Cathode Interlayer Based on Naphthalene Diimide: A Modification Strategy for Zinc-Oxide-Free Inverted Organic Solar Cells

Nasrun

Nisa

Salma

et al. 2023

ACS Appl. Mater. Interfaces

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Perylene diimide with ammonium oxide as a terminal group (named PDIN-O) is a well-known cathode interlayer in conventional-type organic solar cells (OSCs). Since naphthalene diimide exhibits a lower LUMO level than perylene diimide, we chose it as a core to further control the LUMO level of the materials. Small molecules (SMs) produce a beneficial interfacial dipole by the end of ionic functionality at the side chain of naphthalene diimide. With the active layer based on a nonfullerene acceptor (PM6:Y6BO), the power conversion efficiency (PCE) is enhanced by utilizing SMs as cathode interlayers. We discovered that the inverted-type OSC with naphthalene diimide with oxide as a counteranion (NDIN-O) shows poor thermal stability, which can cause irreversible damage to the interlayer−cathode contact, leading to poor PCE (11.1%). To overcome the disadvantage, we introduce NDIN-Br and NDIN-I with a higher decomposition temperature. An excellent PCE of 14.6% was achieved with the device based on NDIN-Br as an interlayer, which is almost the same as the PCE of the ZnO-based device (15.0%). The device based on NDIN-I without the ZnO layer exhibits an improved PCE of 15.4%, which is slightly higher than the ZnO-based device. The result offers a replacement of the ZnO interlayer, which is necessary to carefully manage the sol−gel transition by annealing temperatures as high as 200 °C and leading to low-cost manufacture of OSCs.

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Section: Resultsmentioning

confidence: 99%

Section: Interfacial Properties Of Ito Modified With Smsmentioning

confidence: 99%

Cathode Interlayer Based on Naphthalene Diimide: A Modification Strategy for Zinc-Oxide-Free Inverted Organic Solar Cells

Nasrun

Nisa

Salma

et al. 2023

ACS Appl. Mater. Interfaces

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“…Many methods, such as designing new device structure, synthesizing new materials, improving manufacturing processes, and interface modification, were used to improve the performance of OSCs. Interface modification plays an important role in the long-term stability and the improvement of the PCE of the device [ 4 , 5 , 6 , 7 ]. Lin et al used WS 2 rather than PEDOT:PSS to modify the interface of a device, and the PCE of the modified device is as high as 17.3% [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Effective Double Electron Transport Layer Inducing Crystallization of Active Layer for Improving the Performance of Organic Solar Cells

Chen

et al. 2021

Nanomaterials

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Interface modification plays an important role in enhancing the photoelectric conversion efficiency and stability of organic solar cells. In this work, alkali metal lithium chloride (LiCl) was introduced between indium tin oxide and polyethyleneimine ethoxylate (PEIE) to prepare a double-layer electron transport layer. Results show that the introduction of LiCl has dual functions. The first function is that LiCl can enhance conductivity, thereby facilitating charge collection. The second function is that the double-layer electron transport layer based on LiCl can induce the crystallization of active layer, thereby enhancing charge transport. Devices with LiCl/PEIE double layer achieve a high power conversion efficiency (PCE) of 3.84%, which is 21.5% higher than that of pristine devices (the PCE of pristine devices with pure PEIE interface layer is 3.16%).

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“…Among them, cathode interface layers (CILs) play a key role because of their fundamental importance for electron extraction process. 13,14 A large number of CILs, including metal oxides 15−19 and organic materials, 20−24 are widely used in inverted PSCs, which reduce the energy barrier between the active layer and ITO in order to actualize efficient electron extraction and electron transport. Generally, metal oxides generally require high temperature post-treatment to obtain high-performance PSCs, which not only increases the cost of preparation but also limits the application in flexible PSCs.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Polymer solar cells (PSCs) have gained extensive attention owing to their application potentiality in clean energy sources and roll-to-roll fabricating techniques. , Recently, the power conversion efficiencies (PCEs) of PSCs have distinctly exceeded 16% for a single-junction device and 17% for a tandem device. − In the past decade, many researchers have devoted themselves to improve photovoltaic performance by synthesizing a novel material, , optimizing device architectures, controlling morphology by additives, solvents, and annealing. − To construct high-performance PSCs, numerous interface materials have been exploited in order to efficiently extract free charge and depress charge recombination. Among them, cathode interface layers (CILs) play a key role because of their fundamental importance for electron extraction process. , …”

Section: Introductionmentioning

confidence: 99%

Cationic Polyelectrolytes with Alkylsulfonate Counterions as a Cathode Interface Layer for High-Performance Polymer Solar Cells

Duan

Zeng

et al. 2020

ACS Appl. Mater. Interfaces

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Three cationic polyelectrolytes polyethyleneimine ethoxylate (PEIE)−1,4-butanediol dimethylsulfonate (MSB), PEIE−1,4-butanediol diethylsulfonate (ESB), and PEIE−1,4butanediol dibenzylsulfonate (BSB), containing methylsulfonate, ethylsulfonate, and benzylsulfonate, respectively, were prepared for cathode interface layers (CILs) via a one-step reaction with 1,4butanediol dialkylsulfonate and PEIE as the reactants. The results indicate that PEIE−MSB and PEIE−ESB with smaller counterions possess more efficient electron extraction, higher electron mobilities, and better photovoltaic performance than PEIE−BSB with larger counterions. The PTB7-Th:PC 71 BM-based single junction bulk heterojunction polymer solar cells (PSCs) with PEIE−ESB as the CIL showed power conversion efficiencies (PCEs) of 10.44 and 9.23% under the thickness conditions of 8 and 30 nm, respectively. The PM6:Y6-based PSCs displayed a high PCE of 15.69%. The study provides not only new high-performance CILs but also a new strategy to construct light-soaking-free PSCs via tuning alkylsulfonate counterions.

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Effect of interface modification in polymer solar cells: An in-depth investigation of the structural variation of organic dye for interlayer material

Cited by 20 publications

References 53 publications

Cathode Interlayer Based on Naphthalene Diimide: A Modification Strategy for Zinc-Oxide-Free Inverted Organic Solar Cells

Cathode Interlayer Based on Naphthalene Diimide: A Modification Strategy for Zinc-Oxide-Free Inverted Organic Solar Cells

Effective Double Electron Transport Layer Inducing Crystallization of Active Layer for Improving the Performance of Organic Solar Cells

Cationic Polyelectrolytes with Alkylsulfonate Counterions as a Cathode Interface Layer for High-Performance Polymer Solar Cells

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