Papers

Overcoming intrinsic limitations of short-wave infrared organic photodetectors by suppressing energetic disorder

Yeonsu Choi†, Se Jeong Park†, Seungjae Hong†, Hyun Min Kwon, Suyeon Jo, Hyun Woo Ko, Un-Hak Lee, Seunghyun Oh, Seunghyun Rhee, Jong-Woon Ha, Sunil V. Barma, Hui Chan Ahn, Bo Ram Lee, Sung Cheol Yoon, Min-Chul Park, Sae Byeok Jo*, Jae Won Shim*, Seo-Jin Ko*

Submitted 

Impact of RegioselectiveOligo(Ethylene) Glycol Side-Chain Positioning on Molecular Doping in Diketopyrrolopyrrole-based Conjugated Polymers

Byoungwook Park†, Jong-Woon Ha†, Karina Ayu Larasati, Chang Eun Song, Jong H. Kim, Jaeyoung Jang, Young Hun Kang*, Yun-Hi Kim*, Mijeong Han*  

Submitted 

Understanding Activation Energies of Dark Currents in Shortwave Infrared Organic Photodiodes 

Hoang Mai Luong, Sang Do, Vivian Worthington, Zhong-Ze Qu, Sangmin Chae, Ahra Yi, Hiba Wakid, Qiaonan Chen, Ergang Wang, Jong-Woon Ha, Seo-Jin Ko, Kazuhiro Mouri, Yasuo Miyata, Oskar J. Sandberg, Thuc-Quyen Nguyen* 

Submitted 

Chlorination Substitution Enables Efficient Dopant Accommodation while Preserving Molecular Ordering in Isoinidigo-based Thermoelectric Polymers

Geon Tak Bae, Suhyeon Jo, Honghyun Park, Jisu Baek, Sang Hoon Shin, Seokhwan Jang, Eun Jin Bae, Young Hoon Kang, Jong H. Kim, Fei Xu, Mijeong Han*, Byoungwook Park*, Jaeyoung Jang*, Jong-Woon Ha*

Submitted 

Structure-Controlled Cyclopentadithiophene Derived Non-Fullerene Acceptors for Efficient Near-Infrared Organic Photodetectors

Jong-Woon Ha† , Jae-Hyun Kim†, Byoungwook Park† , Honghyun Park, Sung Cheol Yoon, Jaebin Jeong, Seunghun Lee, Jaeil Park, Jun-Gyu Choi, Seo-Jin Ko, Seung-Hoon Lee, and Sungjun Park 

Small (2026) e14979

Rational Design of Isatin-based Quinoidal Conjugated Polymers for Efficient Organic Photovoltaics with Dual Donor Ternary Strategy

Yeonsu Choi, Nara Han, Jong-Woon Ha, Dong-Yu Kim

Dyes and Pigments 248 (2026) 113551

Donor-Unit-Dependent Polymer Chain Packing Dictates Site-Selective Doping and Charge Transport in High-Performance Naphthyridinedione-Based Organic Thermoelectric Conjugated Polymers

Yeongkwon Kang, Kwangil Jo, Sang Eun Yoon, Sang Hoon Shin, Hyeongju Eun, Sumin Lim, Yejin Ahn, Hyojin Kye, Yu Rim Kang, Taehyeon Yoon, Jong-Woon Ha, Hyungtak Seo, Dong Uk Lee 

Advanecd Functional Materials (2026) 26324

Non-halogenated Solvent Processed Shortwave Infrared Organic Photodetectors Using Sub-1eV Bandgap Acceptor with Cyano Substitution

Hoang Mai Luong,ǂ Jong-Woon Ha,ǂ Hiba Wakidi, Sangmin Chae, Ahra Yi, Subhrangsu Mukherjee, Sang Do, Vivian Worthington, Brian Minki Kim, Zhong-Ze Qu, Hyo Jung Kim, Un-Hak Lee, Sung Cheol Yoon, Harald Ade, Seo-Jin Ko,* and Thuc-Quyen Nguyen*

Advanced Materials (2025) 14845

Balancing Ionic Conductivity and Electrochemical Stability in Carbonate and Ether-Based Polymer Electrolytes for High-Voltage Lithium Metal Batteries

Hyo Won Bae, Ji Hee Choi, Jong-Woon Ha, Ji-Hwan Seol, Jungdon Suk, Ho Seok Park* and  Dong Wook Kim*

Chemical Engineering Journal 525 (2025) 170435

Unveiling the Role of Fluorination in Suppressing Dark Current and Enhancing Photocurrent to Enable Thick-Film Near-Infrared Organic Photodetectors

Yongqi Bai , Seon Lee Kwak, Jong-Woon Ha*, and Do-Hoon Hwang*

Polymers 17 (2025) 2663

Electron-Selective Naphthalimide-Based Monolayers forTuned Energy Level Alignment in Halide Perovskite SolarCells

Parnian Ferdowsi, Euimin Lee, Gyujin Jang, Jin Su Park, Donghyun Lee,Sumit Kumar Sharma, Waygen Thor, Jong-Woon Ha,* Han-Hee Cho,* Jun-Ho Yum,*and Kevin Sivula*

Advanced Energy Materials 15 (2025) 02789

Trifluorophenyl Side Chain Engineering in Benzotriazole‐Core Acceptors for High‐Performance Organic Photovoltaics 

Sabeen Zahra, Du Hyeon Ryu, Jong-Woon Ha, Seungjin Lee, Muhammad Haris, Chang Eun Song, Hang Ken Lee, Sang Kyu Lee, Won Suk Shin 

Energy & Environmental Materials 8 (2025) 12875 

Significance of the relationship between the alkyl side-chain lengths of diketopyrrolopyrrole-based polymers and their thermoelectric properties

Su Hyeon Cho,ǂ Jong-Woon Ha,ǂ Chang Eun Song, Young Hun Kang, Mijeong Han,* Sangwook Lee,* Byoungwook Park*

Chemical Engineering Journal 508 (2025) 160823 

High-performance and flexible thermoelectric generator based on a robust carbon nanotube/BiSbTe foam

Myeong Hoon Jeong, Eun Jin Bae, Byoungwook Park, Jong‐Woon Ha, Mijeong Han, Young Hun Kang

Carbon Energy 7 (2025) 650 

Photo-crosslinking and layer-by-layer processed organic photodetectors with remarkably suppressed dark current

Min Hun Jee, Byoungwook Park, Ah Young Lee, Seunghyun Rhee, Minyoung Lim, Jung Min Ha, Nayoung Kim, Fujun Zhang, Jong‐Woon Ha, Hyungju Ahn, Jong H Kim, Mijeong Han, Sung Cheol Yoon, Seo-Jin Ko, Han Young Woo

Chemical Engineering Journal 490 (2024) 151624 

Elucidating different roles of solvent additives in organic photovoltaics under solar and indoor light emission environments

Gyeong G Jeon, Jinseck Kim, Hyeong Ju Eun, Jong-Woon Ha, Sein Chung, So Jeong Shin, Kilwon Cho, Sung Cheol Yoon, Bumjoon J Kim, Seo-Jin Ko, Jong H Kim

Chemical Engineering Journal 495 (2024) 153419

Organic X-Ray Image Sensors using a Medium Bandgap Polymer Donor with Low Dark Current

Jong-Woon Ha,ǂ Seung Hun Eom,ǂ Bo Kyung Cha, Seyeong Song, Hyeong Ju Eun, Jong H. Kim, Jong Mok Park, BongSoo Kim, Byoungwook Park, Seo-Jin Ko, Sung Cheol Yoon, Changjin Lee, In Hwan Jung, Do-Hoon Hwang*

Energy Environmental Materials 7 (2024) e12750 

Highly crystalline polycyclic aromatic lactam-based regioregular wide-bandgap polymer donors for organic solar cells 

Jong-Woon Ha, Byoungwook Park, Seo-Jin Ko, Do-Hoon Hwang* 

Materials Chemistry C 12 (2024) 80-87 

Crystallization-Driven Optimization of Morphology and Performance in Near-Infrared Organic Photodetectors via Alkyl Side Chain Tuning of Narrow Bandgap Non-Fullerene Acceptors 

Kyounguk Cho,ǂ Jong‐Woon Ha,ǂ Minwoo Nam, Chihyung Lee, Seung Ju You, Ah Young Lee, Sung Cheol Yoon, Mijeong Han, Jong H Kim, Seo‐Jin Ko,* Doo‐Hyun Ko* 

Advanced Functional Materials 34 (2024) 2400676 

High Detectivity Near Infrared Organic Photodetectors Using an Asymmetric Non-Fullerene Acceptor for Optimal Nanomorphology and Suppressed Dark Current

Jong Woon Ha,ǂ Ah Young Lee,ǂ Hyeong Ju Eun, Hyungju Ahn, Changjin Lee, Deok Won Seo, Junseok Heo, Sung Cheol Yoon*, Seo-Jin Ko*, and Jong H. Kim* 

ACS Nano 17 (2023) 18792-18804 

Corroboration of the Toms effect from a frictional drag reducing self-polishing copolymer

Hyun Park, Donghyun Cho, Jong-Woon Ha, Do-Hoon Hwang, Ra Hui Park, Hwawon Seo, Inwon Lee*

Science Bulletin 13 (2023) 9276

Synthesis of a Halogenated Low Bandgap Polymeric Donor for Semi-Transparent and Near-Infrared (NIR) Organic Solar Cells

Hyemin Bae, Byoungwook Park, Jong-Woon Ha, Changjin Lee, Hyosung Choi*, Sung Cheol Yoon*, Seo-Jin Ko* 

Organic Electronics 113 (2023) 106717 

Achieving Highly Sensitive Near-Infrared Organic Photodetectors using Asymmetric Non-Fullerene Acceptor

Un-Hak Lee, Byoungwook Park, Seunghyun Rhee, Jong-Woon Ha, Dong Ryeol Whang, Hyeong Ju Eun, Jong H. Kim, Yeongseok Shim, Junseok Heo, Changjin Lee, Bumjoon J. Kim,* Sung Cheol Yoon,* Jaewon Lee* and Seo-Jin Ko* 

Advanced Optical Materials 11 (2023) 2300312 

Effect of Cyano Substitution on Non-Fullerene Acceptor for Near-Infrared Organic Photodetectors above 1000 nm

Jong-Woon Ha,ǂ Hyeong Ju Eun,ǂ Byoungwook Park, Dong Ryeol Whang, Hyungju Ahn, Yeongseok Shim, Junseok Heo, Changjin Lee, Sung Cheol Yoon*, Jong H. Kim*, Seo-Jin Ko* 

Advanced Functional Materials 33 (2023) 2211486

Semitransparent organic solar cells with light utilization efficiency of 4% using fused-cyclopentadithiophene based near-infrared polymer donor

Hyemin Bae, Jung Won Yoon, Jonghee Yang, Jong-Woon Ha, Changjin Lee, Jaewon Lee*, Sung Cheol Yoon*, Hyosung Choi*, and Seo-Jin Ko*  

Chemical Engineering Journal 452 (2023) 139423

Design of Dithienopyran-based Conjugated Polymers for High-Performance Electrochromic Devices 

Jinseck Kim, Ye In, Phan Ryeong, Ngoc-Lan Tan, Yong Min Kim, Jong-Woon Ha, Sung Cheol Yoon, Bumjoon Kim*, Hong Chul Moon 

Chemistry Materials 35 (2023) 192-800

Thienoquinolinone-Based Acceptor-π-Acceptor Type Building Block for Polymer Donors in Organic Solar Cells 

Jong-Woon Ha, Jae Gyeong Jung, Suha Yi, Chang Eun Song, Bogyu Lim, Yu Jin Jung, Jong Mok Park, Do Hoon Hwang* 

Macromolecular Research 31 (2023)

Low Dark Current Density in Organic Photodiode Achieved by Reduced Trap States of Conjugated Polymers Bearing Fluorinated Moiety

Yongqi Bai, Sungwoo Seo, Jong-Woon Ha, Minho Yoon, Ning Yang, Hea Jung Park, Sung Cheol Yoon, Changjin Lee, Do-Hoon Hwang*, Jiyoul Lee* 

Materials Chemistry C 10 (2022) 18127

Bithienopyrroledione-based polymeric donors for efficient fullerene- and non-fullerene-based organic photovoltaic cells

Jong-Woon Ha, Hea Jung Park, In-Nam Kang, Do-Hoon Hwang* 

Dyes and Pigments 200 (2022) 110176

Eco-Compatible and Highly Efficient Organic Solar Cells with Aggregation-Controlled Terpolymer Strategy

Jinseok Kim, Minju Kyeong, Jong-Woon Ha, Hyungju Ahn, Juhyoung Jung, Soodeok Seo, Tan Ngoc-Lan Phan, Changjin Lee, Sung Cheol Yoon*, Bumjoon Kim*, Seo-Jun Ko* 

Materials Chemistry A 9 (2021) 27551-27559

Surface Polarization Doping in Diketopyrrolopyrrole-Based Conjugated Copolymers by Cross-Linkable Terpolymeric Dielectric Layers Containing Fluorinated Functional Units

Yina Moon,ǂ Jong-Woon Ha,ǂ Minho Yoon, Do-Hoon Hwang,* Jiyoul Lee* 

ACS Applied Materials & Interfaces 195 (2021) 54227-54236

Structure–property relationship of the donor–acceptor type conjugated copolymer with thienoisoquinoline and benzodithiazole units 

Jong-Woon Ha,ǂ Yina Moon,ǂ Minho Yoon,ǂ Do-Yeon Kim, Do-Hoon Hwang*, Jiyoul Lee* 

Dyes and Pigments 195 (2021) 109728

Recent Progress of Ultra-Narrow-Bandgap Polymer Donors for NIR-absorbing Organic Solar Cells 

Dae-Hee Lim, Jong-Woon Ha,ǂ Hyosung Choi, Sung Cheol Yoon,* Bo Ram Lee,* Seo-Jin Ko

Nanoscale Advances 3 (2021) 4306-4320

Highly Efficient and Photostable Ternary Organic Solar Cells Enabled by the Combination of Non-Fullerene and Fullerene Acceptors with Thienopyrrolodione-based Polymer Donors 

Jong-Woon Ha, Chang Eun Song*, Hee Su Kim, Du Hyeon Ryu, Won Suk Shin, Do-Hoon Hwang* 

ACS Appl. Mater. Interfaces 12 (2020) 51699-51708 

Synthesis and Characterization of Benzotriazole-Based Polymer Donors with Good Planarity for Organic Photovoltaics 

Suha Lee, Jong-Woon Ha, Hea Jung Park, Do-Hoon Hwang* 

Macromolecular Research 28 (2020) 903-909

Novel Conjugated Polymers Containing 3-(2-Octyldodecyl)thieno[3,2-b]thiophene as a π-Bridge for Organic Photovoltaic Applications 

Jong-Woon Ha, Jong Baek Park, Hea Jung Park, Do-Hoon Hwang* 

Polymers 12 (2020) 2121

Thienoquinolinone as a new building block for wide bandgap semiconducting polymer donors for organic solar cell

Jong-Woon Ha, Hee Su Kim, Chang Eun Song, Hea Jung Park, Do-Hoon Hwang* 

J. Mater. Chem. C 8 (2020) 12265-12271

Elucidating Roles of Polymer Donor Aggregation in All-Polymer and Non-Fullerene Small Molecule-Polymer Solar Cells 

Jin Su Park, Nayoun Choi, Changyeon Lee, Seungjin Lee, Jong-Woon Ha, Do-Hoon Hwang,* Bumjoon J. Kim*

Chem. Mater. 32 (2020) 3585-3596

High Open-Circuit Voltage Organic Photovoltaics Fabricated Using an Alkylidene Fluorene Derivative as a Non-Fullerene Acceptor 

Sung Lim Lee, Hee Su Kim, Jong-Woon Ha, Hea Jung Park, and Do-Hoon Hwang* 

Bull. Korean Chem. Soc. 41 (2020) 143-149 

Synthesis of ITIC Derivatives with Extended π-Conjugation as Non-Fullerene Acceptors for Organic Solar Cells

Hee Su Kim. Chang Eun Song, Jong-Woon Ha, Suha Lee, Shafket Rasool, Hang Ken Lee, Won Suk Shin, and Do-Hoon Hwang* 

ACS Applied Materials & Interfaces 11 (2019) 47121-47130

Synthesis of Novel Polyacrylates Containing Cyclotetrasiloxane for Fouling-Release Coating Applications

Jong-Woon Ha, Seon-Mi Kim, Hea Jung Park, Inwon Lee, Hyun Park, and Do-Hoon Hwang* 

Nanoscience and Nanotechnology 19 (2019) 4686-4690

Synthesis and Characterization of Self-Polishing Polyurethane Copolymers

Jong-Woon Ha, Seon-Mi Kim, Hyun Park and Do-Hoon Hwang* 

Nanoscience and Nanotechnology 19 (2019) 6554-6558

High-Performance Nonfullerene Organic Photovoltaic Cells Using a TPD-Based Wide Bandgap Donor Polymer 

Jong Baek Parkǂ, Jong-Woon Haǂ, In Hwang Jung, and Do-Hoon Hwang* 

ACS Appl. Energy Mater 2 (2019) 5692-5697

Visible-Light-Responsive High-Detectivity Organic Photodetectors with a 1 μm Thick Active Layer

Jong Baek Parkǂ, Jong-Woon Haǂ, Sung Cheol Yoon, Changjin Lee, In Hwan Jung*, and Do-Hoon Hwang* 

ACS Applied Materials & Interfaces 10 (2018) 38294-38301 ‡ Jong Baek Park and Jong-Woon Ha contributed equally

Synthesis and characterization of a donor-acceptor type copolymer containing ester-functionalized benzo[c][1,2,5]thiadiazole as an accepting building block for organic photovoltaics 

Junhoo Park, Jong-Woon Ha, Hee Su Kim, and Do-Hoon Hwang*

Thin Solid Films 663 (2018) 56-61

Efficient Organic Photovoltaic Cells Based on Thiazolothiazole and Benzodithiophene Copolymers with π-Conjugated Bridges 

Junhoo Park, Jong Baek Park, Jong-Woon Ha, Hea Jung Park, In-Nam Kang, and Do-Hoon Hwang* 

Polymer Science, Part A: Polymer Chemistry, Volume 56 (2018) 1978-1988

Synthesis and Properties of Fluorinated Styrene Copolymers as Antibiofouling Coatings

Jong-Woon Ha, Hea Jung Park, Junhoo Park, Inwon Lee, Hyun Park, Hoyoul Kong, Jong Mok Park, and Do-Hoon Hwang* 

Nanoscience and Nanotechnology 18 (2018) 6343-6347

Shellac Films as a Natural Dielectric Layer for Enhanced Electron Transport in Polymer Field-Effect Transistors 

Seung Woon Baekǂ, Jong-Woon Haǂ, Minho Yoon, Do-Hoon Hwang,* Jiyoul Lee* 

ACS Appl. Mater. Interfaces 10 (2018) 18948-18955 

Synthesis and Photovoltaic Properties of Thieno[3,2-b]Thiophene-Incorporated Quinoxaline-Based Conjugated Donor Polymers

Jong-Woon Ha, Sumin Kwon, Jiwon Lee, Junhoo Park, In-Nam Kang, In Hwan Jung, Do-Hoon Hwang* 

Nanoscience and Nanotechnology Letters 10 (2018) 587-590 

Synthesis of a Zr-Based Metal−Organic Framework with Spirobifluorenetetrabenzoic Acid for the Effective Removal of Nerve Agent Simulants 

Hea Jung Park, Jin Kyu Jang, Seo-Yul Kim, Jong-Woon Ha, Dohyun Moon, In-Nam Kang, Youn-Sang Bae, Suhkmann Kim, and Do-Hoon Hwang* 

Inorganic Chemistry 56 (2017) 12098-12101

Thermoset polymers consisting of novolac and melamine derivatives as insulators for organic thin-film transistors

Jong-Woon Ha, Jae-Ho Jang, Yongnam Kim, Jin-Kyun Lee, JeongHun Kwak,* Do-Hoon Hwang* 

Materials Chemistry C 3 (2015) 3623 – 3628 

Thermally curable organic/inorganic hybrid polymers as gate dielectrics for organic thin-film transistors 

Jong-Woon Ha, Yuntae Kim, Jeongkyun Roh, Fei Xu, Jong Il Park, Jeonghun Kwak, Changhee Lee, Do-Hoon Hwang* 

Polymer Science Part A: Polymer Chemistry 52 (2014) 3260-3268 

Thermally curable polymers consisting of alcohol-functionalized Cyclotetrasiloxane and melamine derivatives for use as insulators in OTFTs 

Jong-Woon Ha, Yuntae Kim, Jeongkyun Roh, Jong Il Park, Jeonghun Kwak, Changhee Lee, Do-Hoon Hwang* 

Organic Electronics 15 (2014) 3666–3673