Update README.md

README.md

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----
-license: apache-2.0
----
+---
+dataset_info:
+  features:
+    - name: title
+      dtype: string
+    - name: journal
+      dtype: string
+    - name: year
+      dtype: int32
+    - name: data_source
+      dtype: string
+    - name: pv_category
+      dtype: string
+license: apache-2.0
+task_categories:
+  - table-processing
+tags:
+  - photovoltaic
+  - solar-energy
+  - renewable-energy
+  - remote-sensing
+---
+
+# UEX-PV-OpenDataHub
+
+A curated hub of open-access photovoltaic (PV) datasets from top-tier scientific journals (2020-Present).
+
+## 📊 Overview
+This hub contains **192** curated PV-related datasets, categorized by their application domains such as Generation, Buildings, Land Use, Potential, and Remote Sensing.
+
+## 📂 Structure
+- `UEX_PV_OpenDatasets.md`: Human-readable database with direct links.
+- `pv_datasets_enriched.json`: Machine-readable structured data.
+- `PV_References.bib`: BibTeX citations for all included works.
+
+## 🏷️ Categories
+- **Generation (发电量)**: 41 datasets
+- **Other PV Data**: 107 datasets
+- **Buildings (建筑物)**: 16 datasets
+- **Potential (潜力评估)**: 15 datasets
+- **Remote Sensing (遥感图像)**: 8 datasets
+- **Land Use (土地利用)**: 5 datasets
+
+## 🔗 Collection
+This dataset is part of the [UEX-RenewableEnergy Collection](https://huggingface.co/collections/UEXdo/uex-renewableenergy).